As the team tries to make sense of this mystery, they realize the killer may be targeting detectives of the 12th Precinct. McCord seems to have considerable respect for Beckett, as proven when she openly lied to their boss, Carl Villante, and even trusts her judgement. The Hollywood Reporter is part of MRC Media & Info, a division of MRC. McCord is really there to push Beckett to be better. She's a very different person than what Cuddy was. Beckett is recruited to assist on a Narcotics investigation, but a routine mission turns deadly when an undercover operation goes array. This truly is a friendship." They like each other a lot. "Though currently she is slated to appear in just three episodes, her future is left open-ended. They have a mutual respect for each other. To survive, Beckett must engage in a battle of wits against some of the most dangerous men in the New York underworld - including a powerful enemy from her past.When a Japanese ballet dancer is mysteriously murdered, Castle and Beckett's investigation into her secret life uncovers evidence that she was killed by a ninja, and now that ninja is coming after them.Castle and Beckett investigate the murder of a Wall Street trader, but the case takes a shocking turn when the they discover the victim was an undercover informant for the U.S. Attorney's office. "It's not until the third episode," Edelstein teases. When Castle finds his life is in danger after being exposed to a deadly toxin Beckett and her new partner Rachel McCord (Lisa Edelstein) have less than 24 hours to locate the antidote. As they investigate, Castle is naturally intrigued, Beckett is naturally sceptical.When a guilt-ridden young woman confesses to the murder of a struggling actor -knowing details only the killer could know - Beckett and Castle seem to have an open-and-shut case, until they uncover proof that their suspect couldn't possibly be the killer. Meanwhile, Ryan?s wife, Jenny, goes into labor, but disaster threatens to ruin the joyous moment.The murder of a young video store clerk takes a strange turn when the team discovers his past history as a high-level hacker. But when they determine the baby and the victim were not related, they discover that finding his rightful parents may be just as hard as solving the murder.When Castle and Beckett discover that the victim of a building fire was actually shot to death, they get on the trail of a serial arsonist turned murderer. She loves what she does and she's very passionate about it. than they thought.When a famed relationship therapist is murdered, it appears that her access to the secrets of her elite and powerful clients led to her death. When evidence links Beckett to the victim, she and Castle become the targets of a manhunt that puts both of them in grave danger.Castle and Beckett's long-awaited wedding is almost here, but when a shocking surprise threatens to ruin the big day, they are sent on a wild mission filled with masked men, angry bikers and a charming good-for-nothing from Beckett's past But it's nothing compared to the shock Castle receives when their investigation leads them straight to his father, Jackson Hunt.When a rising young pop star is found dead in an alley, Castle and Beckett delve into the victim?s out-of-control party lifestyle, but as they dig deeper, a shocking revelation threatens to rock their investigation.When the assistant to Modern Fashion Magazine's dictatorial editor Matilda King is found murdered, Castle and Beckett are thrust into the glitzy, ruthless world of high fashion in their search for the killer. Meanwhile, Castle tries to come to grips with the fact that Alexis and Pi have moved in together.When a famed relationship therapist is murdered, it appears that her access to the secrets of her elite and powerful clients led to her death. But why would a washed-up actor's death warrant Federal scrutiny? Castle returns home to discover that Alexis has brought a new boyfriend, Pi, back from her trip to stay with her, but is soon taken into Federal custody, where Beckett tells him he was exposed to a deadly chemical agent and has only one day to live.Continuing from the season premiere episode, Beckett races against time to find a stolen toxin capable of killing tens of thousands of people.