A tyrannical comic book creator is shot to death in his office, and Ellery Queen becomes the prime suspect because of arguments over how he was portrayed in the victim's comics.

Beloved Vera Bethune stars as Miss Aggie in a radio soap opera, but is about to be written out. One day she drinks water from a jug and is poisoned in a murder attempt. She is taken to the hospital and survives, but the killer returns.