Castle and Beckett discover evidence that links a young woman's murder to Sen. William H. Bracken (Jack Coleman) -- the man responsible for the murder of Beckett's mother; Beckett faces complications as she tries to finally bring Bracken to justice.
Denise tries to help Tanya move on; Roxy grows closer to opening the truck stop; Claudia Joy struggles with how she and Michael are being treated; Joan has a hard time bonding with David; surprising news forces the group to make hard decisions.
Emmalin has college issues; Michael's career path is unclear; Claudia Joy must choose sides; Denise returns to work; Roxy supports Trevor.
Roxy struggles with moving away from her friends; Joan prepares for a hurricane; Denise and Frank celebrate Molly's first birthday.
Members of the tribe lean on one another as they cope with the loss of a loved one.