Daniel Waterman: Leigha Mumby Trial and Conviction

Convicted October 14, 2026 of vehicular homicide and reckless driving causing serious bodily injury; sentencing scheduled December 2, 2026 before Judge Dawn Nichols.

A lawyer’s role, a charging decision and a judicial ruling are different kinds of information. The case file identifies only roles supported by the sources below.

The official release describes a high-speed departure from the road and collision with trees.

Time: Exact time is not established in the reviewed sources.

Evidence / source: Seventh Circuit State Attorney — October 14 verdict

Disputed information / limits: Technical reconstruction and mental-state questions were matters for trial proof.

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The State Attorney reports death from pneumonia after a broken neck and paralysis.

Time: Exact time is not established in the reviewed sources.

Evidence / source: Seventh Circuit State Attorney — October 14 verdict

Disputed information / limits: The complete medical causation record is not reproduced here.

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A Flagler County jury convicted Mumby on both counts after a two-day trial.

Time: Exact time is not established in the reviewed sources.

Evidence / source: Seventh Circuit State Attorney — October 14 verdict

Disputed information / limits: These were vehicular-homicide and reckless-driving convictions, not a murder conviction.

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Judge Nichols is scheduled to sentence Mumby on December 2, 2026, according to FlaglerLive’s October 19 report. No sentence has been imposed.

Time: Exact time is not established in the reviewed sources.

Evidence / source: Seventh Circuit State Attorney — October 14 verdict

Disputed information / limits: A maximum exposure is not the sentence imposed.

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The State argued that Mumby’s high-speed driving and steering movement caused the collision and Waterman’s injuries. The official announcement records guilty verdicts for vehicular homicide and reckless driving with serious bodily injury.

Court TV reports that the defense disputed intentional steering and advanced an outside-force explanation for the crash. The jury rejected the defense account sufficiently to convict on both charged offenses; no separate murder verdict is claimed.

A reported question, an attorney’s argument, an admitted exhibit and a court’s finding are not interchangeable. Where a full transcript, exhibit or signed order has not been obtained, the gap is identified rather than filled with an inferred result.

Sentencing — December 2, 2026 (scheduled)

Future settings can change. The sources identify whether this entry is based on a filed record, an official announcement or attributed court reporting. A source check does not establish that no later filing exists.

After a Super Bowl gathering in Palm Coast, Mumby drove a Honda Passport northbound on I-95 near mile marker 291 with her boyfriend, Daniel Waterman, as a passenger. Investigators said the couple argued after Mumby learned she was pregnant and questioned messages Waterman exchanged with another woman. Florida Highway Patrol reconstruction described speeds of roughly 93–95 mph shortly before the vehicle left the roadway and struck trees. Court reporting described the sharp steering maneuver as disputed evidence; prosecutors argued it was reckless and deliberate, while the defense challenged the inference of intent and elements of the reconstruction. Reporting on pretrial material states braking began approximately two seconds before impact; claims that she never braked should not be treated as conclusively established.

Pretrial reconstruction and evidentiary background · News4JAX: prosecution account and verdict

Waterman was 21 on the date of the crash and 22 when he died October 8, 2025. He suffered a broken neck and paralysis from the neck down; reporting described a lengthy hospitalization and pneumonia preceding his death. The state prosecuted vehicular homicide following his death. The complete medical records and trial exhibits have not been independently reproduced here, so specific medical causation testimony should be checked against the transcript before quoting it verbatim.

News4JAX: victim and injury chronology

Before trial, litigation addressed whether jurors could hear statements attributed to Waterman after the crash, including accusations about the driver’s intention. FlaglerLive reported that important statements were excluded from the jury’s consideration. The fact that an accusation was reported does not mean it was admitted at trial or judicially established. The jury’s actual verdict did not require a finding of premeditated killing.

October 9 pretrial analysis and rulings

Jury selection took place October 12. Eight jurors were seated including two alternates. October 13 testimony included the state’s reconstruction evidence and defense cross-examination challenging aspects of the crash interpretation. Assistant State Attorney Melissa Clark presented the prosecution; defense attorney Reid Hart contested whether the evidence proved the charged criminal mental state. The prosecution and defense positions must not be mistaken for undisputed factual findings.

Jury selection · October 13 trial coverage

On October 14 the jurors received the case after closing arguments, returning guilty verdicts on vehicular homicide and reckless driving causing serious bodily injury. FlaglerLive reported deliberations lasted 71 minutes and that Mumby was remanded to county jail. The defense had argued against inferring an intentional crash from the evidence; prosecutors asked jurors to find the driving criminally reckless. The verdict resolved the counts charged, not every disputed motive allegation reported before trial.

FlaglerLive: verdict-day court reporting · Court TV trial analysis

Next criminal hearing: December 2, 2026 (scheduled). Judge Dawn Nichols will determine the sentence; the statutory maximum is not a mandatory sentence. Monitor for any written sentencing order, restitution determination, post-trial motions and notice of appeal.

Separate legal matter: October 19 reporting describes litigation involving Waterman’s mother, Heather Waterman, over visitation and parental rights concerning Mumby’s daughter. A parental-rights trial was reportedly scheduled for November 4, 2026. That is a different proceeding from the criminal sentencing, and an allegation or petition is not a ruling.

FlaglerLive: October 19 family-court and sentencing update

This case file was reconciled with Jaded Evidence’s master trial records and the public sources listed above. The source descriptions preserve the difference between a primary court document, an official party announcement and reporting. A prosecution release states the prosecution’s account; it is not a substitute for a verdict.

The page links to available originals and clearly identified reporting. Missing transcripts, exhibits, expert reports or signed orders are listed as research gaps. No quotation, timestamp, forensic result or ruling is supplied from inference.