The Best Episodes Written By Dara Resnik

Ned, Chuck, Emerson and Olive tackle a murder mystery involving a man who was murdered over a dog and claims to have been killed by his wife. Problem is, he's a polygamist with four wives.

A desperate Dex reaches out for help, Matt forms an uneasy alliance with Agent Nadeem, and Karen concocts a dangerous plan to provoke Fisk.

Dex tries to run his prey to ground, Nadeem's conscience kicks in, and Fisk looks to recover a gift from Vanessa seized during his incarceration.

Chuck and Ned deal with the shocking return of someone from their past; Emerson and Olive investigate the death of a lighthouse keeper.

The murder of a high school mean girl draws Castle back to one of his many alma maters, where he is giddy to learn that the evidence points to a surprising perpetrator - a teenage telekinetic, throwing he and Beckett into a real-life "Carrie."

Significant new evidence is dredged up from a nearby lake. Hilde discovers that it's the beginning of a much larger mystery. Season finale.

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 when Castle and Beckett discover the victim was in possession of a rare object worth millions of dollars, they realize that this case may be even more complicated – and dangerous – than they thought.

Jane and Rafael interview potential babysitters to help take some of the pressure off everyone, but Jane has specific and lengthy requirements. Jane attends her graduate school's Christmas party in hopes of finding the perfect writing advisor, but things don't go quite as planned. Rogelio is faced with a tough decision about the direction of his life. Petra wants a friendship with Jane, but her mother's antics once again thwart those efforts. Meanwhile, Michael's suspicions have turned out to be true and he thinks he has discovered a lead on a possible rival to Sin Rostro.

As single mom-to-be Savi begins to grasp that Harry may never be coming back, Dom offers her a shoulder to lean on. April is furious when Paul shows up at Lucy's school and shares her frustration with Richard, who decides to take matters into his own hands. Karen and Sam reconnect after she realizes Savi won't give her information about Elizabeth's lawsuit against her; and at work Joss tries to win over Olivier by helping him impress new real estate clients.

Savi finds out she's pregnant and knows there's a good chance the baby is indeed Harry's and not a result of the one-time affair she had with Dom. Joss finds herself befriending her gay real estate client, Alex, who has a controlling significant other. April is pressured by the woman who claims she had a child by April's dead husband. Also, despite Savi's advice to the contrary, Karen continues to find herself drawn to the company of Sam Grey, the college-aged son of her dead lover.