Ari tries to persuade his wife that he is buying Terrance's company for purely business reasons; Turtle still cannot get over Jamie-Lynn; Eric's special meal with Sloan does not go very well.
Something unexpected at sea surprises those on the raft; the remaining islanders try to blow open the hatch; a visitor to the encampment could be a threat to Claire's infant son.
When a transgender woman is murdered outside a hotel where multiple events are taking place, the team discovers a long list of suspects.
Reagan is so determined to provide Amy with a perfect first Christmas that she turns to her mother for help; Chris searches for a gift for Reagan; Ava is concerned when her boyfriend plans to spend Christmas with his ex-wife.