Prosecutors retrying Karen Read in the killing of her boyfriend are laying out a minute-by-minute accounting of what they say happened at the suburban home of a fellow law enforcement officer where John O’Keefe was found unresponsive on a snowy morning three years ago.

Prosecutors say Read, 45, backed her SUV into Boston police Officer John O’Keefe, 46, after dropping him off at a party hosted by a fellow officer in January 2022 and left him to die in the snow. Defense attorneys say she was a victim of a conspiracy involving the police and have suggested he was killed by someone inside the home.