Karen Read is on trial for the murder of her boyfriend, Boston police officer John O'Keefe, who was found unresponsive outside a friend's home on a snowy morning, with the case continuing to make national headlines.

Who is Karen Read and what is she accused of doing to her boyfriend, a Boston police officer? Here's a summary of her case and why it ended in a mistrial.

Karen Read sat down with "Dateline NBC" to talk about the night her former boyfriend, John O'Keefe, was killed in January 2022.

Dateline Producer Sue Simpson describes the frenzied atmosphere at the Karen Read trial from a journalist's perspective.

Prosecutors called on the highest court in Massachusetts not to support dropping two charges against Karen Read who is accused of killing her Boston police officer boyfriend based.