S6, EP15 "The Case of the Prankish Professor"
A professor's wife is charged with his murder soon after he staged a shooting in class; guest Barry Atwater.
S6, EP14 "The Case of the Bluffing Blast"
A girl searching for the father she's never seen appears to be a target for murder; guest Antoinette Bower.
S6, EP13 "The Case of the Shoplifter's Shoe"
A prominent jeweler's sister is charged with shoplifting and murder; guests Leonard Nimoy, Margaret O'Brien.
S6, EP12 "The Case of the Polka Dot Pony"
A stewardess will inherit $200,000 if she was the baby abandoned at an orphanage; guest Jesse White.
S6, EP11 "The Case of the Fickle Filly"
A man invites his murder by buying his girlfriend's racehorse after jilting her for an older woman; guest Jim Davis.
S6, EP9 "The Case of the Weary Watchdog"
Della's socialite friend (Mala Powers) stands accused of killing a blackmailer; guest Keye Luke.
S6, EP8 "The Case of the Stand-In Sister"
A mobster fleeing from a Senate hearing involves Perry in a coast-to-coast evidence search; guests R.G. Armstrong, Susan Seaforth.
S6, EP7 "The Case of the Unsuitable Uncle"
A sailor too poor to pay legal fees makes out a will with bequests of $300,000; guests Sean McClory, Liam Sullivan, Barbara Parkins.
S6, EP4 "The Case of the Double-Entry Mind"
The boss' secretary thwarts a meek bookkeeper trying to embezzle $201,000 from his employers.
S6, EP2 "The Case of the Capricious Corpse"
A girl becomes involved with murder while trying to save a charitable youth organization from predatory heirs.
S6, EP1 "The Case of the Bogus Books"
The murder of a bookstore proprietor uncovers a thriving racket of stolen first editions; guest Adam West.