Mariska Hargitay honors her mother, Jayne Mansfield, in a powerful new HBO documentary that uncovers hidden truths, legacy and lasting impact.

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.

And she's taking audiences along for the ride in her film debut, "My Mom Jayne." The documentary will premiere on HBO on June 27 at 8 p.m. ET/PT. "I've spent my whole life distancing myself from my mother,