Prescription For Murder (a.k.a. Charlie and Kaz Meet the Mummy) - S1.E16

While Charlie is in the hospital, he is mistaken for a hitman's target. Kaz inadvertently blocks Charlie's shot at the would-be killer while in pursuit. They wind up sharing a room while trying to figure out what's going on. It seems that Charlie's previous roommate is the target of mob hit being coordinated by the hospital's chief-of-staff.