Julian Acosta

When the star witness in a high-profile narcotics case and his girlfriend are murdered, the local detectives are certain it is to prevent the witness' testimony. However, Jane suspects that the killer is actually connected to the girlfriend.

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.

Officer Nolan and the entire team begin a desperate search to rescue Officer Chen after her abduction; Officer Lopez discovers Wesley unconscious from a dangerous cocktail of alcohol and pills.

Officer Nolan and team are charged with escorting a notorious female serial killer to the graves of her victims; Officer Chen meets a seemingly perfect man who sparks her interest; Officer Lopez worries about Wesley.

The team takes a second look into a lieutenant's death, when the blogger who accused them of a cover-up turns up dead.

A woman claims a persistent talking wolf drove her to madness. Juliette and Nick weigh the potential costs of getting back his powers and threats against Monroe and Rosalee's marriage intensify.