Mike scams his way into taking over Ruben's moonlighting as a security guard for Gina Gershon; Frank and the rest of the squad follow suit and jump on the personal security business bandwagon; Adina suspects Pip is cheating on her; Jan discovers Al has a surprising sideline.

Mike suspects that Toni is cheating on him with her boss; Frank heads to the track with Tommy to place bets using police department money; Jan and Ruben both vie for a gorgeous apartment left vacant by a murder.

Mike promises Karen that he'll quit drinking, just to prove he really doesn't have a problem; the squad has second thoughts about busting a pot party; Mike discovers the joys of abusing cold medicine.