NCIS: Los Angeles - Season 4 Episode 5 Out of the Past (1) New city. New team. Same attitude.
Overview: When a CIA agent who worked with Sam Hanna over eight years ago seeks his help and is soon found dead of an apparent suicide, Hanna and Callen suspect foul play and a bigger conspiracy. Meanwhile, Deeks finds his inner “dog whisperer” with Kensi as the two go undercover and enter a dog show with a prized poodle.