Arnell Powell

When a body is found in the theater of Martha’s latest show, Castle and Beckett’s investigation leads them into the unexpectedly dangerous world of competitive a capella.

Gibbs' team works with the Army Criminal Investigative Unit to investigate a suspected terrorist attack that killed a Marine colonel at a military country club.

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.

The squad is forced to work with a private investigator when a clothing designer is found poisoned and his wife reported missing; Jane asks Maura to teach her mother how to handle her finances.

Owen and Kim try to talk to Jane about her relationship with Ian; Teri realizes that Ian is responsible for ruining her chances at stardom; Owen and Jane find themselves on opposite ends of a case.

Don and his team must investigate the death of an independent computer researcher with a Defense Department contract, recruiting Charlie to decipher the victim's computer data.