NCIS Season 5 Episode 5

Navy Lieutenant Michael Arnett jumps from a building, despite an apparently fine life and career, before the eyes of many onlookers and after attempts to talk him out of it. It turns out a combination of medication had a fatal side-effect, and his top-secret intelligence work was crucial in a counter-espionage investigation for an Al Qaeda-mole, perhaps him. His last phone call was with someone in the NCS building. Getting closer proves physically dangerous for the team...