Womanizing playboy Loring Lamont has his sights set on Arlene Ferris, his father's shapely secretary. He lures her to his beachfront bachelor pad with seduction on his mind. Arlene slaps the rotter and flees taking Loring's car back into town. Things then go from awful to good grief for poor Arlene. After her departure someone stabs Loring to death and she's suspect number one.

Inventor Walter Randall wants a divorce from his cold-blooded wife Laura in order to be with Phyllis Hudson. Laura decides to get back at Walter by blackmailing one of his assistants into building a bomb that will destroy Walter's underwater sounding invention. While checking on the bomb in the warehouse, Laura is discovered by Phyllis and takes advantage of the situation by knocking her rival out. Phyllis manages to survive the explosion but she is later charged with Laura's murder.