The HBO Original project about Jayne Mansfield is directed and produced by Hargitay and features interviews the "Law & Order: SVU" star conducted with her siblings, biological father and stepmother about the mom Hargitay never got the chance to really know.

Nearly six decades after Jayne’s death, her daughter Mariska is shedding light on her mother and their family. Here, learn about the tragic car accident that ended Jayne’s life.