Deeks disappears while on an undercover assignment for the LAPD; Hetty offers help, so Callen and company lend a hand; Eric follows a trace to a Serbian bad guy; Deeks shows up and solves the case, and the team get him out of a tight spot.
A diverse group of tourists on an organized trip to Lisbon find themselves investigating a murder after one of them is killed on the first morning. Set out to find the killer among the group as they visit beautiful Lisbon sites.
