Laura, who was an entertainer at a nightclub, is found murdered in her apartment, with the doors and windows locked from the inside. The detectives discover that the murderer likely entered and exited through a garbage chute. They also find out that Laura was strangled with a lamp cord and that she had a fondness for expensive jewelry, particularly diamond rings.
The detectives follow various leads, including a stack of theatrical photos and library books found in Laura’s apartment. They also interview several people who knew Laura, including her landlady and her colleagues at the nightclub.
The episode is a dramatization of an actual crime case, and it emphasizes the methodical and persistent approach of the detectives in solving the crime.