Explained: Closing arguments expected in trial of ex-cop accused of killing Sandra Birchmore

Matthew Farwell, a former Stoughton Police Department detective, is on trial for killing Sandra Birchmore, 23, in 2021.

digital forensics expert

A specialist who analyzes digital devices like phones to reconstruct timelines or activity.

paternity test

A test that determines the biological father of a child.

chief medical examiner

The top official responsible for determining causes of death in a jurisdiction.

internal affairs investigation

An internal police probe into misconduct by officers.

undetermined (cause of death)

A medical examiner's classification indicating the manner of death could not be conclusively determined.