Nash takes down the leader of a Chinese gang while helping an old friend, a professional gambler who's in San Francisco to clear up a bad debt.
Nash and Joe risk an international incident when British agents fake the death of a convicted killer in order to use him for their own nefarious purposes.
Nash is out of action after Caitlin accidentally shoots him in the butt. Joe and Bettina do a joint investigation with FBI agents to bust a clever con-artist. Cassidy is stalked by a deranged college student.
Nash and company, along with Jake Cage, catch three escaped convicts to save the SIU. Harvey has fathered a child with Anna; Evan cheats on Cassidy; Nash and Caitlin finally consummate their relationship.
A sleep-deprived Nash must track down an ingenious bomber targeting acorporation while Cassidy tries to conceal her nudity in a school play.
