Mary Dwight works as a hostess at the Club Intime run by ruthless gangster Johnny Vanning. When one of her "clients" is murdered prosecutor David Graham questions Mary but she won't cooperate and Vanning is acquitted. When Mary's sister Betty is killed by one of Vanning's thugs she decides to spill the beans and is beaten into disfigurement. At her bedside all the hostesses agree to testify.