Nell reports that, in Tijuana, Mexico, local police, aided by USA forces, have gunned down the kingpin of the Barbosa drug cartel; however, by bizarre means the body of the victim disappears from the morgue as soon as it arrives; the SecNav directs Callen and company to investigate the possibility of a leak on the US side and to find the missing body. G and Sam chat with Ness, the agent in charge for the DEA; Kensi and Deeks sniff around in Tijuana, meet a cop, see an informant (Javier), get into a gunfight, rescue Javier, and take him to the boatshed; G and Sam again talk with Ness, who suddenly falls dead; Kensi and Deeks question Javier, who gives some startling answers. Back at the office G and Sam put the pieces together, and G solves the puzzle; Kensi and Deeks draw fire and lose Javier; however, the loss was a planned one; Javier runs into trouble; G takes on a new role; the good guys overcome the bad ones; Javier returns to Mexico for a new life.
—DocRushing