The prime minister visits amid threats. Charlie and Rex investigate, leading Charlie to be strapped with a bomb. Rex must uncover the mastermind to save Charlie before the bomb detonates.
Jesse is critically wounded attempting to stop an auto theft. The investigation leads the team to an international auto theft ring supporting terrorists.
Charlie is unable to let a serial arsonist case rest even when he is in the hospital with a broken leg; working from his bed Charlie hopes to identify the arsonist before he strikes again.
After the owner of a construction company is found dead, Charlie and Rex track the killer to an underground casino. Major Crimes goes undercover to solve the case.
Charlie and Rex discover a wanted criminal has been living under a fake identity in St. John's for the past 20 years and end up in the cross-hairs when the man's past catches up with him.