Lady in the Death House

Mary Logan (Jean Parker) is accused of murdering a blackmailer (Uncredited) who threatens to tell her boss, Mr. Gregory (George Irving), that she was the daughter of Tom Logan, a racketeer he prosecuted. It's up to psychologist/criminologist Charles Finch (Lionel Atwill) to connect the dots when the police take the easy way out and arrest, try, convict, and sentence her to execution. Once he figures out who really dunit he and Mary's sister (Marcia Mae Jones) race against the warden's wall clock