Jacqueline Torres

Danny faces a moral dilemma when he's involved with a gun amnesty scheme but suspects a good samaritan may be linked to a robbery.

An FBI agent takes over the case when a two-year-old girl is kidnapped and a hefty ransom demand made. Despite instructions from Beckett to stay away from the investigation, Castle gets involved when he finds out that the FBI agent is her ex-boyfriend.

Sipowicz reports for the sergeant's exam and finds he is the oldest taker of the test. The detectives are on the scene of a death of the brother of a mentally disabled man.