Custodial Interrogation Analysis for Defense Attorneys

Turn Interrogation Footage Into a Cited, Court-Ready Timeline

Evidence Copilot reviews interrogation video, jail calls, and police reports with timestamped, diarized transcripts and an AI evidence agent that cites the exact second it came from.

Why Custodial Interrogation Review Breaks Down in Defense Practice

• Murder cases demand 248 attorney hours — and hours of interview-room footage eat the evenings — The RAND National Public Defense Workload Study found homicide cases require an average of 248 hours of attorney time, and much of that is spent scrubbing bodycam, interrogation video, and jail-call audio for the one Miranda moment or consent-scope exchange that matters. Frame-by-frame review of discovery media competes directly with client interviews, plea negotiation, and motion drafting — so the footage review is the first thing pushed to after-hours work, or skipped entirely.
• NAC felony standard jumped from 13.9 to 35 hours — because digital discovery now floods every file — The old NAC standards recommended 13.9 hours per felony case. The new NAC standards call for 35 — nearly triple — largely because bodycam, interrogation footage, 911 audio, and jail calls now arrive in every discovery dump alongside police reports and scanned documents. The mechanical review burden is no longer optional triage; it's a baseline requirement that legacy workflows (printed transcripts, manual timestamps, sticky notes) simply cannot absorb at current caseloads.
• Triage is the default — and the report-vs-recording comparison is what gets skipped — Overloaded defenders triage cases, and the first task dropped is the report-vs-statement comparison. Yet a single mismatch between the written interrogation summary and the actual recording — an officer's report claiming a waiver that the video never shows — can be the entire motion to suppress. Without a systematic way to compare police reports against bodycam and interview audio, those inconsistencies surface only by luck, if at all.

Why Defense Attorneys <span class="gradient">Choose Evidence Copilot</span>

• Find the suppression issue without rewatching everything — Search across every transcript and document in the case — bodycam, interrogation footage, jail calls, 911 audio, OCR'd police reports — and ask the AI evidence agent where the Miranda warning appears. Every answer cites the exact second of video or page of the PDF, so you verify in seconds instead of rewatching hours of footage.
• Cross-exam drafts you can actually use — Auto-signals compare each new file against earlier evidence in the case and surface candidate inconsistencies — report vs. bodycam, statement vs. jail-call audio — as unreviewed signals before you've opened the file. From a signal, generate cross-exam drafts with both sides' quotes, every question tied to a cited source, saved as attorney-review notes.
• Time back for the work only you can do — With the new NAC standards at 35 hours per felony, the clerical layer has to move somewhere. One-click grounded case briefs (overview, evidence inventory, key moments, inconsistencies, follow-ups) and exhibit packs with a MANIFEST.md citation index hand the mechanical work to the workspace — freeing attorney and law-clerk hours for the judgment calls only you can make.

What's included

• AI evidence agent: ask questions across transcripts and documents and get answers with clickable citations that seek the exact video moment — full-text search, transcript windows, frame grabs, and clip extraction included.
• Agent playbooks: Suppression Motion Prep sweeps consent, search scope, stop duration, K-9, and Miranda issues and drafts a motion outline with both sides quoted and cited; Miranda Timeline builds the chronological custodial-interrogation timeline.
• Auto-signals on ingest: every new file is compared against earlier evidence in the case, surfacing candidate inconsistencies like report vs. bodycam or statement vs. call audio as unreviewed review signals.
• Redaction that respects the original: frame-accurate video redaction, word-level audio muting, and image/PDF redaction — every redaction is a new derived file, originals never touched, every action audited.
• Multi-camera sync: link bodycam, dashcam, and interview-room footage to a single master clock with synced playback, interleaved transcript, and auto-sync proposals reported with match evidence — never auto-applied.
• Exports built for court: exhibit pack zip of video clips, still frames, and quoted excerpts plus a MANIFEST.md citation index, and a review memo — gated by per-member export permission.

Quick wins

• Upload the discovery dump by email — each case gets its own inbound address, so bodycam files named X13qrt9__x3455 land in the right case with diarized, word-level-timestamped transcripts waiting.
• Run the Suppression Motion Prep playbook to sweep consent, search scope, stop duration, K-9, and Miranda issues — it drafts a motion outline with both sides quoted and cited to the exact source moment.

How it works

1. Upload the discovery dump — Drag in interrogation footage, bodycam, jail calls, 911 audio, police reports, and scans — or email attachments to your per-case inbound address. Files up to 2 GB.
2. Get transcripts, OCR, and signals — Diarized transcripts with word-level timestamps, searchable OCR text from scans, and auto-signals surfacing candidate inconsistencies across everything in the case.
3. Build the motion and the cross — Run the Miranda Timeline and Suppression Motion Prep playbooks, draft cross-exam questions from cited quotes, and export an exhibit pack with a citation manifest.

How Evidence Copilot <span class="gradient">Grounds Every Answer</span> in the Recording Itself

• Diarized interrogation transcripts with word-level timestamps and one-click speaker renaming that propagates across every segment — so 'Detective Alvarez' is 'Detective Alvarez' everywhere.
• Miranda Timeline playbook builds a chronological custodial-interrogation timeline, and Suppression Motion Prep drafts a motion outline with consent, search-scope, stop-duration, K-9, and Miranda sweeps — both sides quoted and cited.
• Auto-signals flag candidate inconsistencies (report vs. bodycam, statement vs. call audio) as unreviewed review signals before anyone thinks to ask.

Why we're different

• Every AI answer cites the exact second of video or page of PDF.
• Miranda Timeline and Suppression Motion Prep playbooks built for interrogation review.
• Auto-signals surface report-vs-bodycam inconsistencies before you ask.
• Originals are immutable — every redaction is a new derived, audited file.
• Frame-accurate video, audio, image, and PDF redaction for discovery turnover.
• Multi-camera sync links interview room, bodycam, and dashcam to one master clock.
• Defense-only by design — no prosecutor or law-enforcement use cases.
• Published pricing with no feature tiers: Solo $39, Firm $99, PD Office $750/attorney/yr.

Built for US criminal-defense attorneys, law clerks, investigators, and public-defender offices — defense-only by design, with every AI answer marked AI-generated and pending human review.

What clients say

The Miranda Timeline playbook gave me a chronological custodial-interrogation timeline in one click, and every entry linked back to the exact second of the recording. That's the exhibit I took to the suppression hearing.

— Marcus Whitfield

The auto-signals caught a statement in the police report that didn't match the interview-room audio — a file I hadn't gotten to yet. The cross-exam draft had both sides quoted, so I could verify every question against the source before it went in my notes.

— Dana Okafor

We run four cameras on one interrogation. The multi-camera sync put everything on one master clock with an interleaved transcript, and the sync proposal came with match evidence I could check myself — 31 word matches, ±0.2 second spread. Nothing was auto-applied.

— Elena Vasquez

Frequently asked questions

Book a 20-minute walkthrough at evidencecopilot.com/book, or start on the Solo plan at $39/user/mo — every plan includes the full workspace, no feature tiers.