David Meunier

Kate and Castle are still at odds with his interference in her personal life, but are forced to work together when they find a dead man in a tree; Castle struggles to finish his latest novel under the pressure of a looming deadline.

Information about Huck's past is revealed; not realizing that someone could be watching, Fitz and Olivia have an emotionally charged conversation; Cyrus becomes increasingly suspicious of Jake.

When an 8-year-old is found murdered on the Appalachian Trail, the BAU team goes deep into its forests in search of a man lurking in the wilderness who is targeting children.

When the remains of a couple are discovered in a cave at National Park, the team must piece together the identity of the man and the woman as well as solve the crime. After interrogating two viable suspects, the team identifies the woman as a marketing executive who also served as her partner’s AA sponsor, providing clues that lead them to expose the truth. Meanwhile, Booth’s girlfriend and Afghanistan war correspondent, Hannah Burley (guest star Katheryn Winnick), makes a surprise visit. After meeting Burley and sensing the couple’s genuine happiness, Brennan re-evaluates her own relationship with Booth, and he tries to teach her that love is not always logical..

As Olivia deals with the aftermath of what she's done, she finally finds out what exactly Jake and Rowan are plotting. With their plans already in motion, Olivia is forced to try and stop it. Meanwhile, in flashbacks, we learn more about Jake's past and how he first got involved with B6-13.