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Reverend Randall Foos says it was just an unfortunate accident when his car hit and killed 19-year-old Sara Casey as she rode her bicycle. But a civil suit revealed more than the eye could see... or couldn't, that turned this accident into a crime.

Prosecutors turned the jury's attention to surveillance video from the hours leading up to John O'Keefe's death. This helped them put together a timeline of events which they hoped would convince the jury that the defendant killed her boyfriend in a deadly hit-and-run. Investigators collected footage from different locations around town to get a sense of how the defendant was moving about in the lead-up to O'Keefe's death.

Hours before John O'Keefe lost his life, he and his girlfriend, Karen Read, were out at a bar with friends. Jurors in her murder trial got a glimpse of how many drinks she had, raising the idea that this could have led to a hit-and-run and John's death. Massachusetts State Police Sergeant Yuriy Bukhenik alleged that she had six alcoholic drinks in less than two hours. Police figured this out by retrieving bar receipts and watching surveillance video.

Jurors saw details about the crime scene through the photos that were displayed in court. Prosecutors wanted to show that it was possible for the defendant to have used her car to kill her boyfriend, John O'Keefe, in a hit-and-run. On the stand was Sergeant Yuri Bukhenik, the supervisor to the main detective on this case. Later under cross-examination Karen Read's defense had probing questions for this Massachusetts State Police trooper.

The cross-examination had begun on the state police sergeant who assisted in the investigation into the death of John O'Keefe. Karen Read's defense team tried to raise all kinds of red flags about this case and how the 16-year Boston police officer died. Sergeant Yuri Bukhenik recalled that investigators initially thought John O'Keefe was severely beaten before he was found in the snow. But physical evidence and witness statements turned their attention to Karen Read as a possible suspect.

Karen Read's attorney grilled the state police sergeant who worked the investigation into the death of John O'Keefe. Her defense was nitpicking at what officers did and did not do, as her lawyers tried to raise reasonable doubt in the case against her. Sergeant Yuri Bukhenik explained when and how his team impounded the defendant's SUV. Prosecutors alleged this was the murder weapon that killed John O'Keefe.

For a third day in a row a state police sergeant was testifying for the prosecution team. Sergeant Yuri Bukhenik was among the main investigators who looked into the death of veteran Boston police officer, John O'Keefe. Karen Read's Defense went into detail about surveillance footage that captured her car being impounded by police. Bukhenik confirmed that he was with Trooper Michael Proctor, lead investigator on the case, when police impounded the defendant's car for more testing.

Defense attorney Alan Jackson alleged that police manipulated video involving Karen Read's car. He was trying to raise doubts about law enforcement's handling of key evidence in this case. Sergeant Yuri Bukhenik admitted to jurors that the video was, in fact, inverted. But during redirect examination, he tried to clear things up dismissing the allegation that the video was intentionally manipulated and altered. Next to the stand was Trooper Michael Proctor, the lead investigator on the case.