NCIS - Season 3 - Eps 16: Family Secret
When an ambulance explodes while carrying the remains of a Marine's body that was killed in a car crash, the NCIS team is called in to investigate what actually happened. The investigation leads them to some sudden discoveries -- the DNA of the victim found in the ambulance doesn't match the Marine's DNA; the ambulance was set up to explode; and the family of the dead Marine is hiding a very important secret.
About NCIS

Title: NCIS
First Air Date: 2003-09-23
Last Air Date: 2025-05-05
Status: Returning Series
Rating: 7.6/10 (from 2387 votes)
Language: EN
Seasons: 24
Total Episodes: 488
Network: CBS
Genres: Crime, Drama, Action & Adventure
Production Companies: Paramount Television, Belisarius Productions, CBS Studios
Synopsis
From murder and espionage to terrorism and stolen submarines, a team of special agents investigates any crime that has a shred of evidence connected to Navy and Marine Corps personnel, regardless of rank or position.