Nashville & Middle Tennessee · Defense support

Nashville Criminal Defense Investigations The state had months. You have a hearing date.

Prosecutors build a case with detectives, crime lab access and a head start measured in months. Defense counsel is handed a discovery packet and a calendar. Watchtower Investigations closes that gap: we find and interview the witnesses nobody canvassed, verify or dismantle an alibi before it reaches a jury, pull the video that gets overwritten in thirty days, and hand your attorney a documented record that stands up under cross-examination.

  • Licensed Tennessee investigators who work under attorney direction and privilege
  • Signed or recorded witness statements, taken and preserved properly
  • Evidence preservation that starts before surveillance video is overwritten
  • Reports and photographs prepared to be exhibits, and testimony if needed

Free case consultation · Attorney-directed work product · Urgent preservation requests handled same day

  • Licensed Tennessee investigators
  • Confidential from the first call
  • Court-ready documentation
  • Backed by Delator Group

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Core services

Specialty casework · 61 case types

Relationship & Domestic Matters4
Covert Surveillance6
Vetting & Records Research7
Digital Privacy1
Business & Corporate Matters11
Defense Case Support4
Employment Disputes3
Security & Readiness Reviews5
People Locating6
Difficult Circumstances4
Property Loss & Theft3
Facility & Care Oversight2
Vehicle & Repair Disputes3
Fraud & Deception2
What a defense investigator does

What criminal defense investigation actually involves

A defense investigator is not a second lawyer and not a private detective from a film. The job is narrower and more useful than either: independently verify what the state claims happened, find the facts nobody looked for because they did not help the prosecution, and preserve all of it in a form that survives a courtroom.

Most of that work is unglamorous. Knocking on the doors of an apartment building the detective never canvassed. Requesting the gas station's surveillance retention policy before day thirty-one. Pulling the call detail records that put a phone in a different part of Davidson County than the indictment says. Sitting with a reluctant witness long enough that they say what they actually saw rather than what they told an officer at two in the morning.

The other half is discipline about what we do not do. We do not coach witnesses, we do not offer them anything, and we do not approach a represented co-defendant. Tennessee makes tampering with a witness a felony under T.C.A. § 39-16-507, and a defense investigation that cuts a corner hands the state a second case and destroys the first. Every interview we take is documented in a way that lets counsel prove exactly how it was obtained.

We work at the direction of defense counsel wherever counsel is retained, which keeps the product inside the attorney work-product doctrine. If you are charged and have not yet retained an attorney, we will tell you plainly that hiring counsel comes first, and we can start the moment they engage us.

Who we help

Who we work for on criminal cases

Four situations, all with the same clock running against them.

Defense attorneys

Retained counsel who need field capacity: canvassing, interviews, records and scene work that a practice cannot absorb while managing a docket.

Appointed and public defender counsel

Attorneys carrying heavy caseloads where investigative support is authorized but capacity is the constraint. See our appointed counsel support work.

People facing charges

Individuals who have been charged or expect to be, and who want an independent look at the evidence. We will ask you to retain counsel first.

Families of the accused

Relatives funding a defense who want to understand what can realistically be investigated, and what it will cost, before money is committed.

What’s included

Defense investigation services we provide

The specific work that changes the evidentiary picture in a criminal case.

01

Witness location and interviews

Finding witnesses listed in discovery who have moved, plus the ones never canvassed, and taking recorded or signed statements that can be used to impeach or corroborate.

02

Alibi verification

Building or testing a timeline with receipts, transaction records, cameras, work records and independent witnesses — before counsel commits to it.

03

Scene documentation

Photographing and measuring the location while it still resembles the night in question: sightlines, lighting, distances and obstructions that contradict an eyewitness account.

04

Video and evidence preservation

Identifying every camera that may have captured the incident and getting preservation requests out before retention windows close.

05

Background and credibility research

Lawful public-record research on state witnesses: prior statements, convictions bearing on truthfulness, civil suits and public social media relevant to bias or motive.

06

Mitigation and sentencing support

Gathering employment, treatment, service and family records that support a sentencing position or a plea negotiation.

Tennessee law

The lines a defense investigation does not cross

Defense investigation is the area where an overreaching investigator does the most damage. Tennessee treats witness tampering and evidence interference as felonies, and the fallout lands on the defendant, not the investigator.

What a licensed investigator can do

  • Locate and interview witnesses who agree to speak with us, and record or take signed statements
  • Research public records, court files, prior convictions and publicly visible social media
  • Photograph and measure public scenes, and private ones with the owner's permission
  • Send preservation letters to businesses and request records through counsel's subpoena power
  • Testify to what we did and what we found, under oath, if the defense calls us

What we won’t do, and why it protects you

  • Suggest what a witness should say, offer anything of value, or discourage anyone from testifying
  • Contact a represented co-defendant or a juror during trial
  • Misrepresent who we are to obtain a statement, or record where Tennessee consent rules forbid it
  • Access sealed records, phone content or accounts without lawful process
  • Conceal, alter or remove anything that could be evidence, including material that hurts the defense

Two practical consequences. First, we identify ourselves as defense investigators at the start of every witness contact — witnesses may decline, and that is their right. Second, if we find something that damages your case, it goes in the report. Counsel needs to know the weak point before the state raises it, not after.

How it works

How a defense case workup runs

Preservation first, because that is the part with a deadline you cannot extend.

Case consultation

We review the charge, the discovery you have, the court date and what counsel needs proven or disproven. This tells us what is worth investigating.

Free · Usually 30 to 45 minutes

Preservation actions

Before anything else: camera identification, preservation letters, and contact with witnesses whose memory or availability is at risk.

Same day where retention windows are closing

Discovery review and gap analysis

Reading the state's file for what is not there — the uncanvassed addresses, the unexamined timeline, the witness whose statement changed between reports.

Delivered as a written gap memo

Field investigation

Canvassing, interviews, scene documentation and records collection, sequenced so that the most time-sensitive work happens first.

One to three weeks for most cases

Report and exhibit preparation

A written report with attached statements, photographs and records, organized so counsel can move exhibits without reconstructing them.

Testimony available if the defense calls us
What you receive

What defense counsel receives

Built as case material, not as a narrative summary.

  • Recorded or signed witness statements with the circumstances of each interview documented
  • A written investigative report keyed to the elements of the charge
  • Scene photographs with dates, times, positions and lighting conditions recorded
  • Records obtained, with the chain of how each was requested and received
  • A gap memo identifying what the state's investigation did not do
  • Investigator testimony on how evidence was located, collected and preserved
Pricing

What a defense investigation costs

Defense work is billed hourly rather than as a flat package, because case scope varies enormously. A single alibi verification is a few hours. A homicide workup with twenty witnesses across three counties is a sustained engagement.

We scope in phases so the cost is controllable. Phase one is typically preservation plus a discovery gap analysis, priced and approved on its own. Counsel decides whether phase two is warranted based on what phase one finds, rather than committing to a full workup at the outset.

For appointed counsel, we can provide the itemized estimate courts typically require when authorizing investigative funds, in the format the court expects.

What moves the cost

  • How many witnesses need locating versus already having current contact information
  • Whether the case spans multiple counties or states
  • How close the court date is, and whether work must be compressed
  • The volume of discovery to be reviewed
  • Whether scene work requires specific conditions such as matching time of day
  • Whether testimony and trial standby are anticipated
Coverage

Where we investigate

Nashville is the base. Criminal cases rarely stay inside one county, and neither do we.

Counties we work regularly

  • Davidson County
  • Williamson County
  • Rutherford County
  • Sumner County
  • Wilson County
  • Montgomery County
  • Robertson County
  • Maury County
  • Cheatham County
  • Shelby County
  • Madison County

Cities across Middle & West Tennessee

  • Nashville
  • Brentwood
  • Franklin
  • Murfreesboro
  • Hendersonville
  • Gallatin
  • Mt. Juliet
  • Clarksville
  • Columbia
  • Lebanon
  • Memphis
  • Jackson
14 questions answered

Questions about criminal defense investigations

Do I need an attorney before hiring a defense investigator?

In practice, yes, and we will tell you so directly. Work performed at the direction of your attorney generally falls within the attorney work-product doctrine, which protects the investigation and our notes from discovery by the state. Work you commission personally does not carry that protection, which means anything unhelpful we find could become available to the prosecution. If you are charged and unrepresented, retain counsel first; we can begin the same day counsel engages us, and preservation work can start immediately after that.

How quickly does surveillance video disappear?

Faster than most people expect. Many small businesses in Nashville run systems that overwrite in seven to thirty days. Some gas stations and convenience stores are at seventy-two hours. Apartment complexes vary widely. Municipal and highway cameras have their own retention schedules, usually short. This is why preservation is the first thing we do rather than a later step: a written preservation request delivered on day five is routine, and the same request on day forty is a lost exhibit. If your case involves video of any kind, call before you do anything else.

Can a defense investigator make a witness change their statement?

No, and any investigator who suggests otherwise is describing a felony. Under T.C.A. § 39-16-507 coercing or inducing a witness to testify falsely or withhold testimony is witness tampering, a Class C felony. What we lawfully do is different and often more effective: locate witnesses nobody interviewed, take a full statement from someone who gave only a partial account to police, and document inconsistencies between what a witness said at the scene and what appears in a later report. Those inconsistencies are impeachment material, and they come from careful work rather than pressure.

What is a discovery gap analysis?

It is a written review of the state's file focused on what is missing rather than what is there. Typical findings: an apartment building where only two of forty units were canvassed, a timeline that leaves forty minutes unaccounted for, a named witness never contacted, a camera visible in a scene photograph that nobody requested footage from, or a statement that changed between the initial report and the supplement without explanation. The gap analysis is usually the highest-value early deliverable, because it tells counsel exactly where investigative money should go.

Will you tell me if you find something that hurts my case?

Yes, every time, in writing. An investigator who filters findings to please the client is worse than no investigator at all, because counsel then builds a strategy on an incomplete picture and learns the truth from the prosecutor in front of a jury. If the alibi does not hold, if the witness you were counting on contradicts you, or if the video shows what the state says it shows, counsel needs that before deciding whether to try the case or negotiate. Bad news delivered early is usually worth more than good news delivered late.

Can you investigate before charges are filed?

Yes, and pre-charge work is frequently the most valuable investigation in a case. If you know you are under investigation, evidence that supports you is disappearing on the same retention clocks as everything else, and witnesses are being interviewed by detectives while their memories are fresh. Pre-charge documentation of an alibi, or a preserved video that never enters the state's file because it undercuts their theory, can occasionally prevent an indictment. This work is still performed through counsel.

Do you testify at trial?

Yes, where the defense calls us. Investigator testimony typically covers how a witness was located, what conditions were present at the scene, how photographs were taken, or how a record was obtained and preserved. Because we may testify, we document our own work to that standard from the first day: dated notes, recorded interviews where Tennessee law permits, photograph metadata intact, and a clear record of who we contacted and when. Testifying also means we cannot be the one who takes a questionable shortcut, which is a useful discipline.

How do you handle witnesses who do not want to talk?

We identify ourselves as defense investigators, explain what the case is, and accept a no. A witness is under no obligation to speak with either side, and a documented refusal is itself information counsel can use — particularly if the same witness spoke freely to police. We do not misrepresent who we are, we do not return repeatedly after a clear refusal, and we do not approach witnesses at their workplace in a way that pressures them. Persistent but respectful contact, done once and documented, is the approach that holds up later.

Can you get phone records, text messages or social media accounts?

Not directly, and be wary of anyone who says they can. Stored communications are protected by the federal Stored Communications Act, and obtaining them requires lawful process — a subpoena or court order that counsel issues, not an investigator's request. What we can do is identify which records exist and which carrier or platform holds them, draft the preservation language so the data is not purged before the subpoena lands, and analyze what comes back. Call detail records, in particular, often resolve a location dispute once obtained properly.

What does cell site or location evidence actually prove?

Less than television suggests, and that cuts both ways. Call detail records place a phone in the general coverage area of a tower, which in a dense part of Davidson County may be a few blocks and in rural Robertson County may be several miles. It is not GPS. We obtain the records through counsel, map the tower coverage, and where the state overstates the precision of that evidence, that overstatement is itself the defense point. Where the records genuinely conflict with your account, you will hear that from us first.

How much does a criminal defense investigation cost?

It is billed hourly and scoped in phases rather than sold as a package, because a DUI case review and a multi-witness felony workup are not the same undertaking. Phase one is typically preservation plus a discovery gap analysis, quoted and approved on its own; counsel then decides whether the findings justify a fuller investigation. This structure means you are never committing to an open-ended engagement at the outset. For appointed counsel seeking authorization of investigative funds, we provide an itemized estimate in the format courts expect.

Do you work with public defenders and appointed counsel?

Regularly. Appointed counsel in Tennessee can seek authorization for investigative support, and the constraint is usually capacity and approval rather than willingness. We provide the itemized scope and estimate that authorization requires, keep the phased structure so the authorized amount covers defined work, and deliver in a format that supports any later request. Our appointed counsel support page covers this in more detail, including how we handle cases where funds are approved for a narrow purpose.

What is the earliest useful moment to bring in an investigator?

The day you learn you are a suspect, and if that has passed, today. Every day that elapses shortens the list of recoverable video, degrades witness memory, and increases the chance a witness has moved or been reached by the other side first. There is no stage at which investigation becomes pointless — post-conviction work is real and sometimes successful — but the evidence available at week one is meaningfully better than the evidence available at month six, and no amount of later effort recovers it.

Do you handle appeals and post-conviction cases?

Yes. Post-conviction investigation is a different exercise: the trial record is fixed, so the work focuses on evidence that was never presented. That typically means locating witnesses trial counsel never interviewed, documenting what an investigation at the time would have found, or developing the factual record behind an ineffective assistance claim. Expect it to be slower than pre-trial work and more dependent on records than on field contact, and expect an honest assessment from us about what is realistically still recoverable years after the fact.

Tell us what the state says happened.

We will tell you what can still be verified, what is about to be lost, and what it costs to find out. The consultation is free and the preservation clock is already running.

Call (629) 310-8667 · Email contact@delatorgroup.com
Watchtower Investigations · Nashville, Tennessee · Delator Group’s Nashville hub

Page last reviewed . Watchtower Investigations is a licensed Tennessee private investigation agency and part of Delator Group. Information on this page is general and is not legal advice; for advice about your case, speak with a Tennessee attorney. Back to top ↑