Here are the shows that American viewers have been returning to time and again for comfort -- the 15 longest-running ...

In Episode 22 of NCIS Season 8, Tony DiNozzo discovers that his former partner, Danny Price, was murdered by the "Port to Port killer.

McGee puts twists onscreen his teammates in his novels — Leroy Jethro Gibbs was L.J. Tibbs, Tony was Tommy, Ziva was Lisa — and so that means he’s McGregor, Torres ( Wilmer Valderrama) is Rick Soares, ...