Ski Carr

Sex is in the air as Gob seduces his father's former secretary, Lindsay and Tobias go see a marriage counselor, and George Sr. and Lucille have a bizarre conjugal visit.

Frank must deal with the fallout after a newly-retired NYPD lieutenant is accused of shooting a mugger on the subway.

Charlie is very offended when Alan chooses their unintelligent cousins to be Jake's guardians if he dies.

Upton is unwittingly drawn into a deadly betrayal and finds herself in a fight for her life; with minimal leads, Voight and the team scramble to find her before it's too late.

When agent Lance Hamilton's partner is killed, Sam dons his previous undercover persona of `Switch' to find the culprit; Kensi, Deeks, Roundtree and Kilbride work to catch an aerospace engineer who stole classified navy schematics.

A man with a long history of theft and sexual offences is found murdered and tied to his bed with visible signs of having been sexually assaulted himself. However, there are no signs that the house was broken into.