Longest Jury Deliberations in American History: Timeline & Verdict Explorer

Deliberation Chronometer & Day-by-Day Progression Historical Record Case

Deliberation Days

Calendar Days

Deliberation Hours

260

In Active Chambers

Charges / Counts

Total Indictment

Final Outcome

Split / Acquittal

52 Acquitted, 13 Hung

Deliberation Progress Scrubber: Day 1 of 64 1% Complete

Chambers convene. Formal request for exhibit index and read-back schedule submitted to bailiff.

McMartin Preschool Trial (1990)

The longest and costliest trial in California history. Following nearly three years of courtroom testimony, the jury deliberated for nine weeks across 64 calendar days. Faced with conflicting child testimony and mass social hysteria, jurors delivered 52 not-guilty acquittals and deadlocked on 13 counts, triggering a mistrial.

Acquittal on 52 counts; hung jury on 13 counts leading to mistrial

Comparative Case Matrix Side-by-Side

Select Benchmark Case

Primary Case McMartin Preschool (1990)

Benchmark Case Long Island Bank Fraud (1992)

Deliberation Duration Delta +34 Days

Active Chamber Hours Delta +110 Hours

Total Witness Disparity +34 Witnesses

Jury Notes Volume Delta +12 Notes

Primary case McMartin Preschool Trial (1990) deliberated 34 more calendar days than Long Island Multi-Defendant Bank Fraud (1992).

Baseline Felony Deliberation: Standard US state felony juries deliberate for a median of 2.5 to 5 hours. A multi-week or multi-month deliberation typically correlates with multi-defendant indictments, complex conspiracy statutes, or severe juror ideological deadlock.

Record Ledger: Juror Deadlock Dynamics & Verdict Distributions

Trial & Jurisdictional Venue	Deliberation Time	Defendants / Charges	Witnesses / Exhibits	Jury Deadlock Turning Point	Ultimate Verdict Outcome

McMartin Preschool Trial (1990)

Record Ledger: Juror Deadlock Dynamics & Verdict Distributions

Deep-Dive Case Dossiers: The 6 Historic Marathon Deliberations