A parole officer goes undercover to investigate prison brutality but is trapped when the only person on the outside who knows why she's there is killed.
Ida Lupino
as Claire Tyson
Lois Nettleton
as Sandra Parker / Sally Porter
Jessica Walter
as Dee Dee
Belinda Montgomery
as Melinda Carr
Penny Fuller
as Helen Anderson
John Larch
as Barney
Neile Adams
as Connie
Hazel Medina
as Althea
Katherine Cannon
as Alice
Lucille Benson
as Billie
Joyce Jameson
as Simpson
Judy Strangis
as Maggie
