Mariska Hargitay’s new documentary, “My Mom Jayne,” reveals heartbreaking new information about the night her mother Jayne Mansfield died. While shooting her directorial debut, the “Law & Order: Special Victims Unit” star learned how she was accidentally left behind at the scene of the car crash which killed her mother and two other people.

Mariska Hargitay's new documentary tells her story just as much as it tells her mom's story. The 61-year-old Emmy-winning actress, best known for her role in NBC's "Law & Order: Special Victims Unit," is making her feature film directorial debut with her new doc titled,

In Mariska Hargitay's new film 'My Mom Jayne,' which premiered at the Tribeca Festival on June 13, it is revealed she was accidentally left at the scene of the crash which killed her mom, Jayne Mansfield.