When a lipstick print is found on the forehead of a murder victim, Mason's client is charged with the crime, even though she and her roommate were poisoned and unconscious at the time.
Perry Mason is hired by a distressed girl who assumed the identity of a non-existent cousin to report her own disappearance as a suspected suicide.
A vindictive woman is found slain after she plotted to destroy her husband's underwater sounding device.
Perry defends a rookie policeman charged with robbery and homicide; guest Jeanette Nolan.
The Jupiter 2 lands on a planet Dr. Smith mistakenly believes is Earth. When Smith is lured out of the ship by cyborgs masquerading as earthlings, the Robot saves him - and the family - in the nick of time.
