Joel Polis

The retired lead detective on Beckett's mother's homicide case is gunned down after telling her he has new information; Castle and Beckett's partnership grows stronger.

Coulson and the team are faced with the consequences of the war with Hydra as revelations threaten to destroy them; Hydra makes a move.

A cabin burns down in the woods revealing two bodies – one of a modern-day witch and one from the days of the Salem Witch Trials – leading Booth and Brennan into the world of Wicca to find a killer. Meanwhile, when Hodgins’ reckless driving gets him and Angela arrested and thrown in jail, Sweets and intern Clark Edison (guest star Eugene Byrn) step into unfamiliar territory to help out the team.

The team tracks a suspect who is abducting young mothers; Beth makes a discovery about Mick.