Commonwealth v. Read — Trial Archive
Person Frank Sheridan Trial 1Defense forensic pathologist who testified that John O’Keefe’s arm injuries were consistent with an animal attack rather than a vehicle strike, and that his fatal head injury rendered him immediately unconscious. ← All People
🔬 Expert Witness · Norfolk County

Frank Sheridan

Trial 1
170 lines 3 proceedings
Courtroom still of Frank Sheridan.

About

Dr. Frank Sheridan is a forensic pathologist retained by the defense in Trial 1 who testified on Day 30. Working from photographs and reports rather than direct examination of the body, Sheridan offered opinions on O'Keefe's injuries that supported the defense theory: that the arm wounds reflected a dog attack rather than vehicle contact, and that the fatal head injury would have caused immediate unconsciousness, meaning O'Keefe could not have moved after sustaining it. His testimony was confined to a single day covering direct examination, cross-examination, and a brief redirect.

Key Points

  • Sheridan testified that O'Keefe's arm injuries showed no characteristics consistent with being struck by a vehicle, and that his initial reaction upon seeing photographs was that the marks were animal-related — most likely dog claw and scrape marks.
  • On the fatal head injury, Sheridan stated that upon impact O'Keefe would have been rendered immediately unconscious and incapable of movement, though capable of continued breathing until brain swelling progressed — testimony central to the defense's argument that O'Keefe could not have been struck and then walked or fallen elsewhere.
  • During cross-examination, Lally asked Sheridan about a UC Davis canine-DNA testing item and other described materials; Sheridan said he was unaware of some, did not remember others, or had not been shown or given them.
  • Lally emphasized that Sheridan had not performed the autopsy and had worked from photographs and the autopsy report. Lally also asked about several other described materials; Sheridan said he was unaware of some, did not remember others, or had not been shown or given them.
  • On redirect, the defense introduced a photograph of O'Keefe's knee injury as Exhibit 657, with Sheridan characterizing it as merely an abrasion, countering any suggestion that the knee wound indicated a vehicle strike.

Trial Record (3)

Trial 1 First Criminal Trial Apr 29, 2024 – Jul 1, 2024 3 proceedings

Day 30

Direct Frank Sheridan Elizabeth Little 7 highlights 65 lines spoken
Summary

Forensic pathologist Frank Sheridan testified that O'Keefe's arm injuries did not resemble a direct vehicle impact, were consistent with an animal attack with qualifications, and that the fatal head injury was not consistent with a fall onto grass.

Highlights (7)
Quote

“Well, if you are hit by a vehicle, whichever part of your body is hit, if it's a significant impact at all, you're going to get bruising, and we don't have any bruising here.”

Sheridan explained the basis for his opinion that the arm abrasions did not resemble a direct vehicle impact.

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Quote

“I would say they are, yes. I'm not 100 percent sure, but my initial reaction when I saw this photograph was that it was probably an animal or most likely I would say a dog, scrape marks with paws, Possibly also a bite mark from the teeth, as well, possibly.”

Sheridan gave a qualified alternative explanation for the arm marks.

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Quote

“But, even without the snow, grass is basically too soft for somebody falling and hitting their head on it to get the injuries I've just described.”

Sheridan explained his opinion that the head injury was not consistent with a fall onto grass.

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Show 3 more
Key Moment

Sheridan described the arm injuries shown in Exhibit 19 as antemortem abrasions and testified that a direct vehicle impact to that part of the arm would be expected to produce bruising that he did not see.

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Key Moment

Sheridan described the fatal head injury, testified that O'Keefe would have been unconscious immediately after the impact, and said the injury was not consistent with falling onto grass.

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Cross Frank Sheridan Adam Lally 2 highlights 99 lines spoken
Summary

Sheridan confirmed the limits of his review, agreed with pathology findings, and maintained his animal-injury opinion while acknowledging limits on identifying, locating, and timing the injuries.

Highlights (2)
Quote

“They don't look remotely like that to me.”

Sheridan maintained that the arm injuries did not resemble injuries from vehicle parts, shattered glass, or taillight material.

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Quote

“If all that happened, yes, and onto asphalt or something like asphalt, yes, if, indeed, that's what happened. But, like, for other reasons, I don't think that is what happened.”

Sheridan acknowledged a conditional alternative mechanism for the head injury but did not adopt it as his opinion.

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Locations Touched By This Testimony

Good Samaritan Medical Center 2 procs 34 Fairview Road 1 proc Canton Police Department 1 proc