Mercedes Colon

A woman walks into the station covered in blood, carrying a gun, and saying she killed someone. Unfortunately, the trauma of what she did caused her to forget who she is or who the victim is. The team tries to unravel this bizarre case as they deal with the loss of their close friend and colleague, Detective Barry Frost.

A former college football player is stabbed during a fundraiser; Frost's mother visits Boston.

Lie to Me’s Kelli Williams guest stars as a former client of Patrick Jane during his days as a psychic. When her nine-year-old son, Conner, is kidnapped she begs Jane to use his “psychic expertise” to help locate her missing son – putting Jane in an uncomfortable position. While the CBI team is asked to help, Jane butts heads with his former client’s new “spiritual advisor.”