NCIS Agents is an American crime series that is a spin off of the JAG series - a military investigation office. The protagonists of the series are G. Callen and Sam Hanna. Callen is a talent with the past, which until some time did not know his parents and his origin (about the fact that he is a Rom learns only in adult life). He did not remember the name from which only his first letter remained. Callen's colleague is Sam, who is an expert in matters related to the near-by, additionally his advantage is that he was a commando. Agents can always count on the help of a special agent Kensi Blye and her partner Dominic Vaile. Kensi Blye decided to become an agent only because of her father's death.