02E23 - Imposters

An unidentified man dies after a severe beating and an intense burning of his clothes; a specific radiopharmaceutical present in the body implies a connection to a previous case; Callen and company investigate; Eric identifies the victim, G and Callen check out his pad, and Kensi and Deeks check out his wheels. G and Sam visit the Prince o' Whales, where they meet a star and gain some information; Nell finds some bacon, then G and Sam meet a guy who just wrecked his house; G instructs him on the wonders of modern electronic technology. To trap a suspect, Sam poses as bait; a chase and an explosion ensue; an errand boy says that the head man has a dirty bomb, and that he intends to use it; later the gang visit a rally to honor military veterans; Deeks takes a bomb-sniffing dog, who sniffs a bomb; the team grab the head man. Hetty resigns, and her successor arrives; Hetty disappears from Los Angeles and reappears in Prague in the Czech Republic. [To be continued.]