The penultimate episode sees the retired detectivesinvestigating possibly their most difficult cold case yet. Ablood-stained bust is uncovered during construction work in acemetery and the evidence points to the murder of analternative-medicine practitioner seven years earlier. Furtherclues lead to the controversial world of cryopreservation - thepractice of keeping clinically dead patients frozen to extendtheir life cycle. Sasha is determined they don't put a footwrong - but with the sobering possibility that two perpetratorsare still at large, the detectives are forced to go out on alimb.
DEA agent Talia Del Campo turns to the NCIS: Los Angeles teamfor help after her partner is murdered. Also, after Kensigrows suspicious that Deeks is hiding something, he surprisesher by introducing her to his mother.
Dan starts to question new landlord Trevor's intentions towardshis mother. Meanwhile, Lisa attempts to make the opening ofher new office a day to remember.
The Guardians struggle to subdue the suddenly-sprung-to-lifeCelestial head that is the Knowhere space colony, as well asstorm Korath's ship to rescue Quill, Gamora and the mysteriousCryptoCube that holds the Cosmic Seed.
After Matt walks in on Joan and John being intimate, Joanattempts to lead a group therapy session. Also, Jen hires abreast-feeding consultant couple, Matt and Colleen have themost enjoyable bad date ever, and Heather and Tim move to anew home with the help of a moving company that employsex-cons.
In the midst of the early thaw, Darrell and Lisa struggle tomake it home over the hardest hit trail on the winter roadssystem. Art and the King of Obsolete reunite to haul a giantdouble trailer over over a slick path. Veteran Alex Debogorskiraces against the clock to deliver to a town in need before theroad closes, while fellow Polar driver Todd Burke finds aunique way to conquer a melted ice crossing.
On the heels of his reinstatement, Gordon is thrust onto thehigh-profile case tracking the deadly inmate escape from ArkhamAsylum. Meanwhile, Galavan plans his next move, while Bruceasks for help from his fathe's old friend to unlock the secretsin his office, and Nygma asks out Kristin Kringle on a date.
The guys go to an abandoned asylum seeking inspiration for anew horror movie idea, but end up accidentally killing a manthey think is keeping them hostage. Wracked with guilt, theyeach try to pin the murder on someone else. Meanwhile, Stewieis on a mission to destroy Brian's glasses because he's annoyedby how pretentious Brian's been acting when he wears them.
Plans for the wedding are gathering steam, but Lady Mary'smeddling lands Carson in trouble with Mrs Hughes. Cora andViolet clash over plans for the hospital takeover, andThomas's job search is proving disheartening. Mary comes upwith a fresh idea that offers Anna fresh hope, prompting atrip to London, and Lady Edith faces challenges at themagazine although it's a problem closer to home that reachesbreaking point. A day for the family and servants ends in panicand leaves Robert facing a difficult decision.
April and Beth prepare for their trip to Rome. Meanwhile,Greer returns with news that she's moving back to Boston; andBrenna feels both excited and conflicted about Finn.
In part 2 of the premiere, Beckett's side of her abruptdisappearance is revealed. After receiving a mysterious tipfrom her past, Beckett is launched into a fight for her life,with a team of mercenaries hot on her trail. While Castleinvestigates why his wife is on the run, Beckett must figureout who wants her dead, before they can finish the job.
After Holt is transferred to the NYPD Department of PublicRelations, the new captain's arrival causes the precinct todissolve into chaos, despite Terry's best efforts to keepeveryone on point. Meanwhile, Jake and Amy face the aftermathof their "for reals" kiss.