Welcher described reverse travel at about 23 mph when the recorded interval ended.
What the record shows
Welcher described approximately 74 percent accelerator application during the reverse event. The cited report combines forward and reverse distance descriptions; we have not verified a reverse-only distance against the original exhibit. A disputed clock adjustment places the event around 12:32 a.m.
The vehicle recording and the clock alignment are separate parts of the analysis. Defense engineer Matthew DiSogra disputed the synchronization method.
Burgess used a three-point turn to align the clocks after questioning call-log synchronization. DiSogra regarded that approach as valid but argued that alternative offsets should also be considered. These are competing expert analyses, not independently synchronized observations.
The supporting documents also include a separate 2024 vehicle-distance chart, reproduced below, and a CDR report. The chart displays a calculated 97.35-foot reverse total; we do not substitute that earlier calculation for the unresolved 2025 interval. The CDR report and vehicle-control-history table concern different records; the absence of a recorded crash event is not proof that no impact occurred.
Key facts
- Reported speed at recording end
- About 23 mph
- Reverse-only distance
- Original exhibit verification pending
- Clock alignment
- Disputed expert analysis
Limits and disputed context
This is not a pedestrian-impact recording. A recorded reverse event does not, by itself, identify contact with a person. The recording endpoint is not a verified impact time or impact speed.
Why we believe John was struck by the Lexus
We believe John O'Keefe was struck by the Lexus SUV Karen Read was driving. This is our interpretation of the evidence, not an established account of the collision.
Why we give this weight
Our view rests on three connections: the substantial reverse maneuver Welcher described, the final overnight phone activity Whiffin identified, and the recovered pieces Vallier fitted to the damaged taillight. We find these more persuasive together than any one detail alone. They link vehicle movement, the phone record and material associated with the Lexus, although they do not provide a recording of a collision.
The proposed timing is important to our view, but it is disputed. Placing the reverse event near 12:32 a.m. depends on the prosecution's clock alignment, which DiSogra challenged. The phone's timing and location also have limits. We consider the proposed overlap meaningful without treating it as an exact impact time or a complete account of John's movements. Several readings from one phone are not several independent witnesses.
The plastic is a separate reason for our view. Fitted edges give the larger recovered pieces a more specific connection to the Lexus than a resemblance in color. But fitting pieces together answers which assembly they came from, not when they broke or how they reached the lawn. The smaller clothing particles and their handling require their own scrutiny. We do not describe every particle as a unique physical match.
We also consider the damage reported before the tow. Barros's account weighs against an entirely intact taillight arriving in police custody. It does not tell us what caused the earlier damage, and he said a later photograph showed more damage than he remembered. Welcher's driveway analysis is relevant to the alternative explanation, but its geometry and suspension assumptions were challenged. Our conclusion depends on the wider record rather than treating either point as decisive.
The material challenge
The hardest objection is the injury evidence. Rentschler said the injuries and proposed movement did not support a Lexus strike. Laposata disputed a fall onto the lawn as the explanation for the head wound. The medical examiner left the manner of death undetermined. These are substantial problems for a confident reconstruction, not details we can dismiss because they conflict with our view.
The investigation creates another serious difficulty. Hartnett's tested vehicle areas did not yield a positive blood result. Collection and custody problems limit what later laboratory results can establish. Proctor's documented misconduct also gives readers a reason to scrutinize the investigators' decisions and accounts. We cannot make those problems disappear by pointing to a matching fragment.
Our response
We still find the combination of vehicle movement, phone activity and fitted fragments more persuasive than the alternatives reviewed here. That is our judgment, not a technical answer to ARCCA's objections. The test setups and John's unknown posture limit what a simulation can establish, but those uncertainties do not prove the prosecution's account either. We cannot fill in the missing movements or explain a precise injury mechanism.
We weigh allegations of evidence planting separately. Bukhenik's account placed him and Proctor at the station when the first SERT fragment was found and denied a detour or transfer. That challenges a particular planting sequence; it does not account for every earlier opportunity or erase the custody questions. We do not regard planting as established in the material reviewed. Nor would rejecting it, by itself, establish a vehicle strike.
The same distinction applies to the house and browser-search arguments. Limits in the phone data leave uncertainty about a person's route. The later-search explanation undercuts one allegation of advance knowledge; it does not tell us how John died. We believe a strike is the more persuasive explanation because of the affirmative connections described above, not because every alternative has been made impossible. The jury's death-related acquittals and OUI conviction remain part of this account.
What we are not claiming
Our belief does not establish intent, a precise impact time or speed, every movement after contact, or guilt of an offense. Karen Read was acquitted of the death-related charges. We keep that outcome, the strongest contrary testimony and the unresolved gaps alongside our assessment.
S02: Welcher: reverse-driving data and contact demonstrations
May 27, 2025: 1 p.m. update (trigger data); 4 p.m. update (driveway contact).
Open publisher sourceS03: Welcher cross-examination and driveway geometry
May 29, 2025, 11:30 a.m. update: driveway geometry, suspension assumptions and trigger criteria.
Open publisher sourceS21: DiSogra challenges vehicle-clock synchronization
May 30, 2025: 11:25 a.m. direct, 1 p.m. cross-examination and 3:30 p.m. follow-up on clock alignment.
Open publisher sourceS22: Burgess explains the vehicle-clock alignment
May 20, 2025: 1 p.m. clock-offset cross-examination and 3:05 p.m. redirect.
Open publisher sourceS43: Whiffin: final activity and battery-temperature evidence
April 28, 2025, 1:30 p.m. update: Apple Health interval, logging delay and combined-data location opinion.
Open publisher sourceS08: Vallier: physical fits and clothing-debris handling
May 16, 2025, 12:30 p.m. update: Vallier physical fits and clothing-debris handling.
Open publisher sourceS46: 2024 vehicle charts and component photographs: exhibits 593-603
PDF pages 1-4 of 11, especially page 4, exhibit 596; remaining pages are component photographs.
Open publisher sourceS47: 2024 CDR report and vehicle event table: exhibits 590-591
PDF pages 1-4 of 8: CDR report and limitations; page 8: separate event table.
Open publisher sourceS19: Whiffin phone-data cross-examination and McCabe testimony
April 29, 2025: 1 p.m. Whiffin cross-examination and redirect; 2:20 p.m. location-accuracy discussion.
Open publisher sourceS10: Hanley: glass and plastic; Wolf: head-injury testimony
1:05 p.m. and 3:05 p.m. updates; Hanley comparisons
Open publisher sourceS36: Russell cross-examination, evidentiary ruling, and Barros
3:45 p.m. update: Nicholas Barros; Dighton condition, later photograph, report detail, and cross-examination.
Open publisher sourceS12: Rentschler: collision testing and cross-examination
ARCCA testimony
Open publisher sourceS24: Laposata and Rentschler discuss injury mechanisms
Defense medical and biomechanical testimony
Open publisher sourceS11: Scordi-Bello: autopsy findings and undetermined manner
Medical examiner testimony
Open publisher sourceS30: Hartnett: examination of the Lexus and clothing
Maureen Hartnett testimony; blood tests, garment examination, and taillight removal
Open publisher sourceS34: Diamandis, Proctor messages, and Russell testimony
9:10 a.m. ruling, Diamandis testimony, Russell testimony
Open publisher sourceS29: Bukhenik on corrected video orientation and vehicle custody
4 p.m. update: Bukhenik redirect; towing route, driveway arrival, station presence, and denials of a handoff.
Open publisher sourceS05: O'Hara: SERT search; Guarino: calls and voicemails
3:45 p.m. update: Kevin O'Hara; search call, arrival, first recovery, scene security, and suspension of search.
Open publisher sourceS13: Hyde: interpretation of the disputed Safari artifact
5 p.m. update; Hyde cross-examination and device handling
Open publisher sourceS01: Verdict and sentencing in the second trial
Verdict and sentence paragraphs; article updated June 20, 2025.
Open publisher source