Season Eight
- #212: The Case of the Missing Button 9/24/64
- Julie Adams as Janice Blake
- Ed Nelson as Dirk Blake
- Claire Wilcox as Button Blake
- Dee Hartford as Lois Gray
- Anthony Eisley as Vince Rome
- Otto Kruger as Judge Norris
- Alan Baxter as Roger Gray
- Lysa D'Anjou as Naomi Sutherland
- Mike Mazurki as Cully Barstow
- Stanley Adams as Pancho Morado
- David Macklin as Mike Sommers
- Charles Irving as Judge Blanchard
- Ruth Packard as Miss Smithers
- Garland Thompson as Lab Expert
- Pitt Herbert as Coroner's Physician
- Jean MacRae as Woman At Motel
- Robert Riordan as Janice's Lawyer
- Joe Dominguez as Bartender
- Lee Miller as Sgt. Brice
- Richard Geary as Scuba Diver
- #213: The Case of the Paper Bullets 10/1/64
- Richard Anderson as Jason Foster
- Lynn Loring as Susan Foster
- Patrick McVey as Harry Mardig
- Jan Shepard as Margaret Foster
- Melora Conway as Alma Rice
- Ford Rainey as Randolph Cartwell
- Arthur Space as Edgerton Cartwell
- Frank Marth as Carl Rohr
- Booth Colman as Prosecutor
- Stewart Moss as David Cartwell
- Carl Prickett as Rufus Findley
- House Peters, Jr. as Lt. Jeffers
- Lou Krugman as Gambling Boss
- Joel Fluellen as Bartender
- Paul Barselow as Coroner's Physician
- Jason Johnson as Judge
- William Tracy as Photographer
- Ann Ayars as Woman Reporter
- Robert Rothwell as Campaign Worker No. 1
- John Truax as Taxi Driver
- Barry Brooks as Croupier
- Jack Fife as Campaign Worker No. 2
- Charles Stroud as Court Clerk
- #214: The Case of the Scandalous Sculptor 10/8/64
- June Lockhart as Mona Stanton Harvey
- Stuart Erwin as Everett Stanton
- Sue Ane Langdon as Bonnie
- Sean McClory as Hannibal Harvey
- Dan Tobin as Dickens
- Nydia Westman as Ivy Stanton
- Simon Scott as Rex Ainsley
- Carlos Romero as Nonno Volente
- Isabel Randolph as Lottie Porter
- Willis Bouchey as Judge
- Jonathan Hole as Whitey
- Ellen Atterbury as Secretary
- Ralph Manza as Yard Man
- Frances Morris as Matron
- Don Washbrook as Messenger
- Don Anderson as Bartender
- #215: The Case of the Sleepy Slayer 10/15/64
- Phyllis Hill as Rachel Gordon
- Hugh Marlowe as Doctor Lambert
- Robert Brown as Tracey Walcott
- Gigi Perreau as Phyllis Clover
- John Napier as Bruce Jay
- Karl Swenson as Charles Norman
- Joan Tompkins as Sadie Norman
- J. Edward McKinley as Harlan Farrell
- Richard Hale as Abner Gordon
- Morris Ankrum as Judge
- William Woodson as Medical Examiner
- Douglas Evans as Salesman
- Alfred Hopson as Clark
- John Rayborn as Pusher
- Gilbert Frye as Chef
- #216: The Case of the Betrayed Bride 10/22/64
- Anne Farge as Marie Claudet
- Dianne Foster as Elaine Meacham
- Michael Forest as Pierre Dubois
- Jeanette Nolan as Nellie
- Guy Stockwell as Jimmy Meacham
- John Larkin as Todd Meacham
- Jacques Aubuchon as Roger Brody
- Neil Hamilton as Victor Billings
- Paul Dubov as Monsieur Arnaux
- Grandon Rhodes as Judge
- Joey Wilcox as Boy
- Lee Miller as Sgt. Brice
- Robert Gormley as Officer
- #217: The Case of the Nautical Knot 10/29/64
- Tom Tully as Harvey Scott
- Anne Whitfield as Joanna Monford
- Lisa Gaye as Pamela Blair
- Arline Judge as Emmalou Schneider
- Henry Brandt as Rick Scott
- Barbara Bain as Elayna Scott
- Mark Roberts as Ben Scott
- Whit Bissell as Laurence Barlow
- Francis McDonald as Peg-Leg Jasper
- Lane Bradford as Rider On Horseback
- Renata Vanni as Rosa Martinez
- Maurice Wells as Captain Vinson
- Fern Barry as Esther Larson
- Glen Vernon as Steward
- Kenneth MacDonald as Judge
- Thomas Hasson as Bellboy
- Willis Robards as Banker
- #218: The Case of the Bullied Bowler 11/5/64
- Michael Connors as Joe Kelly
- Anne Seymour as Bonnie Mae Wilmet
- Milton Selzer as Dr. Max Taylor
- Patricia Morrow as Marla Carol
- Robert Harland as Bill Jaris
- Paul Lukather as Alan Jaris
- Jeff Donnell as Rose Carol
- Charles Gray as Jack Baker
- Maurice Manson as Orson Stillman
- Patricia George as Linda Terry
- John Gallaudet as Judge
- William J. Tannen as Sergeant
- Elizabeth Harrower as Sadie Noymann
- Lonie Blackman as Marge
- Allan Hunt as Marla's Boyfriend
- #219: The Case of a Place Called Midnight 11/12/64
- Gerald Mohr as Alan Durfee
- Harry Townes as Colonel Owens
- Robert Emhardt as Frank Appleton
- Werner Klemperer as Hurt
- Eddie Firestone as Phil Morton
- Susanne Cramer as Greta Koning
- Fred Vincent as Frederic Ralston
- Robert Cornthwaite as Duval
- Jim Davis as Joe Farrell
- Ivan Triesault as Dr. Kleinman
- Eva Soreny as Madame Jurgen
- Peter Mamakos as Juan Carlos Ramirez
- Monique LeMaire as Stewardess
- Peter Hellmann as Max
- Jean Bartel as Helga
- Will J. White as M.P. Sgt.
- Jan Arvan as Swiss Bank Clerk
- Werner Reichow as Mechanic
- Charles Stroud as Policeman
- Ike Ivarson as Swedish Sailor
- Ken Willer as Juggler
- #220: The Case of the Tragic Trophy 11/19/64
- Richard Carlson as Anthony Fry
- Paul Stewart as J. J. Pennington
- Constance Towers as Joanne Pennington
- Patricia Huston as Lydia Lawrence
- John Fiedler as Howard Stark
- George Brenlin as Coley Barnes
- Mimsy Farmer as Kathy Anders
- Alvin Childress as Janitor
- Reed Hadley as Medical Examiner
- Robert Bice as Uniformed Man
- Walter Mathews as Second Reporter
- Kenneth MacDonald as Judge
- E. J. Andre as Druggist
- Alex Bookston as First Reporter
- Charles McDaniel as Third Reporter
- Jack Swanson as First Cameraman
- Russ Whiteman as Second Cameraman
- Bobby Johnson as Red Cap
- #221: The Case of the Reckless Rockhound 11/26/64
- Audrey Totter as Reba Burgess
- Bruce Bennett as Malone
- Elisha Cook as Reelin' Pete
- Ben Johnson as Kelly
- Doug Lambert as Kinder
- Jeff Corey as Bascom
- Donald Buka as Clark
- Ted de Corsia as Polek
- Roy Barcroft as Murphy
- Lenore Shanewise as Mrs. Munger
- Ralph Moody as Jenkins
- Robert C. Gormley as Guard
- Nick Nicholson as Police Sergeant
- Harry Stanton as Judge
- #222: The Case of the Latent Lover 12/3/64
- Lloyd Bochner as Eric Pollard
- Jason Evers as Roy Galen
- John Lasell as Dean Franklin
- Gilbert Green as Harlan Talbot
- Marion Moses as Sibyll Pollard
- Charlotte Fletcher as Aimee Wynne
- Douglas Dumbrille as Judge Robert Adler
- Alexander Lockwood as Autopsy Surgeon
- Armand Harrison as Nat Rudick
- Emory Parnell as Leo Mann
- John Matthews as Dr. Richard Jenkins
- Charles Irving as Judge No. 2
- Harold Gould as Lawrence West
- Olan Soulé as Court Clerk
- Henry Travis as 1st Spectator
- Richard Reeves as Taxi Cab Driver
- Robert J. Stevenson as Police Officer
- Patricia Joyce as 2nd Spectator
- #223: The Case of the Wooden Nickels 12/10/64
- Will Kuluva as Homer Doubleday
- Phyllis Love as Minerva Doubleday
- Nancy Berg as Vivian Norman
- Murray Matheson as Howard Hopkins
- Walter Burke as Panhandler (Kelso)
- Berry Kroeger as Rexford Wyler
- Hunt Powers as George Parsons
- Grandon Rhodes as Judge
- Penny O'Donnell as Cigarette Girl
- Vera Marshe as Woman Apartment Manager
- Sherwood Keith as Museum Curator
- Thomas Freebairn-Smith as Hotel Desk Clerk
- Karen Norris as Matron
- Lee Miller as Sgt. Brice
- #224: The Case of the Blonde Bonanza 12/17/64
- Mary Ann Mobley as Dianne Adler
- Michael Constantine as Dillard
- Bruce Gordon as Mr. Winlock
- Vaughn Taylor as Montrose Foster
- Paul Gilbert as Harrison Boring
- Ruth Warrick as Mrs. Winlock
- Jonathan Lippe as Marvin Palmer
- John Gallaudet as Judge
- Larry Blake as Plainclothesman
- Jack Pepper as Waiter
- Len Hendry as Police Officer
- Jim Henaghan as Delivery Boy
- #225: The Case of the Ruinous Road 12/31/64
- Grant Williams as Quincy Davis
- Barton MacLane as Archer Osmond
- Joan Blackman as Hilary Gray
- Allen Case as Adam Conrad
- John Howard as Harley Leonard
- Meg Wyllie as Marguerite Keith
- Les Tremayne as Ed Pierce
- Bert Freed as Joe Marshall
- Willis Bouchey as Judge
- Frankie Darro as Messenger
- Patricia Joyce as Secretary
- #226: The Case of the Frustrated Folk Singer 1/7/65
- Gary Crosby as Jazbo Williams
- Bonnie Jones as Amy Jo Jennings
- Mark Goddard as Lester Crawford
- Robert H. Harris as Harry Bronson
- Richard Garland as Lionel Albright
- Joyce Meadows as Audrey Stemple
- John Considine as Chris Thompson
- Leonard Stone as Al Siebring
- Gale Robbins as Evelyn Bronson
- Lee Meriwether as Natalie Graham
- S. John Launer as Judge
- Sidney Clute as Taxi Driver
- Eddie Hanley as Photographer
- BeBe Kelly as Starlet No. 1
- Linda Burton as Starlet No. 2
- #227: The Case of the Thermal Thief 1/14/65
- Barry Sullivan as Ken Kramer
- Bettye Ackerman as Amy Reid
- Burt Metcalfe as Jeff Mills
- Kathie Browne as Lona Upton
- Robert Strauss as Pete Kamboly
- Richard Eastham as Roland Canfield
- Nina Shipman as Maxine Nichols
- Joyce Van Patten as Fay Gilmer
- Noel Drayton as Mr. Costelni
- Dick Whittinghill as Barman
- Irene Martin as First Girl
- Mimi Dillard as Second Girl
- Mark Tapscott as First Officer
- John Hart as Dion
- Don Lynch as Third Officer
- Harlan Warde as Desk Sergeant
- Joan Sudlow as Stella (Maid)
- Lee Miller as Sgt. Brice
- #228: The Case of the Golden Venom 1/21/65
- Lee Philips as Kevin Lawrence
- Noah Beery as Tony Claus
- Frances Reid as Lucille Forrest
- Carole Wells as Mirna Lawrence
- Frank Ferguson as Walter Coffee
- Mort Mills as Sgt. Ben Landro
- Arthur Malet as Ralph Day
- Cal Bartlett as Joe Sullivan
- Kenneth MacDonald as Judge
- Richard Reinauer as Doctor
- #229: The Case of the Telltale Tap 2/4/65
- Linden Chiles as Clyde Darrell
- Roland Winters as Archer Bryant
- Jeanne Bal as Vera Wynne
- H. M. Wynant as Glen Holman
- Indus Arthur as Nancy Bryant
- Parley Baer as Ian Jarvis
- William Allyn as Elliot Forrest
- S. John Launer as Judge
- Lester Dorr as Bartender
- Seamon Glass as Karl Lewis
- #230: The Case of the Feather Cloak 2/11/65
- Jon Hall as Lt. Kia
- David Opatoshu as Gustave Heller
- John van Dreelen as Jarvis Logan
- Michael Dante as Douglas Kelland
- Wende Wagner as Anona Gilbert
- James Frawley as District Attorney Alvarez
- Miriam Goldina as Auntie Hilo
- Joyce Jameson as Dolly Jameson
- Keye Luke as Choy
- Tony Scott as Jon Kakai
- Tom Palmer as Attorney Roberts
- Arthur Wong as Judge Kee
- Bob Okazaki as Pet Shop Owner
- Thomas Carlisle as First Man Surfer
- Steven Blair as Second Man Surfer
- Diane Swanson as First Girl
- Gunilla Hutton as Second Girl
- #231: The Case of the Lover's Gamble 2/18/65
- Elizabeth Perry as Estelle Mabury
- Hal Peary as Freddy Fell
- Margaret Bly as Betty Kaster
- Donald Murphy as Dr. Philip Stark
- Joan O'Brien as Jill Fenwick
- Roy Roberts as Henry Thomas
- June Dayton as Frances Stark
- Linda Leighton as Sarah Thomas
- Grandon Rhodes as Judge
- Hal Baylor as First Truck Driver
- Minerva Urecal as Martha Glenhorn
- Barbara Perry as Beauty Operator
- Richard Reeves as Second Truck Driver
- Orville Sherman as Mr. Link
- Robert Hernandez as Newsboy
- John Cliff as Bus Driver
- #232: The Case of the Fatal Fetish 3/4/65
- Fay Wray as Mignon Germaine
- Karen Steele as Carina Wileen
- Alan Hewitt as Curt Ordway
- Gary Collins as Larry Germaine
- Lynn Bari as Ruth Duncan
- Douglas Kennedy as Brady Duncan
- Erin Leigh as Agnes Fanchon
- Richard Devon as Neil Howard
- James Griffith as Jack Randall
- John Gallaudet as Judge Penner
- William Keene as Mr. Kenneth
- Robert Chadwick as Policeman
- Douglas Evans as Magistrate
- Breena Howard as Nurse
- Wilda Taylor as Choreographer and Dancer
- Johnny Francis as Master of Ceremonies
- #233: The Case of the Sad Sicilian 3/11/65
- Margo as Serafina
- Nico Minardos as Giangiacomo
- Anthony Caruso as Enrico Bacio
- Fabrizio Mioni as Paulo Porro
- Rudy Solari as Massimo Bacio
- Linda Marsh as Elizabeth Bacio
- Dabbs Greer as Dodson
- Paul Comi as Father Reggiani
- Charles Irving as Judge
- Dort Clark as Desk Sergeant
- Alexander Lockwood as Coroner
- Charles La Torre as Uncle Fiastri
- Tommy Cook as Joe (Bellboy)
- Jack LaRue as Cafe Proprietor
- Patricia Joyce as Woman Customer
- #234: The Case of the Murderous Mermaid 3/18/65
- Patrice Wymore as Victoria Dawn
- Bill Williams as Charles Shaw
- Jean Hale as Reggie Lansfield
- Jess Barker as Doug Hamilton
- Richard Erdman as Ben Lucas
- Lee Bergere as Dr. George Devlin
- Nan Leslie as Lillian Keely
- Ron Kennedy as Male Nurse
- Richard St. John as Patron
- Jack Carol as First Reporter
- John Ward as Second Reporter
- Maurice Wells as First Man
- Barry Brooks as Second Man
- #235: The Case of the Careless Kitten 3/25/65
- Louise Latham as Matilda Shore
- Lloyd Corrigan as Gerald Shore
- Allan Melvin as Thomas Link
- Julie Sommars as Helen Kendall
- Alan Reed, Jr. as Frank Templar
- Hedley Mattingly as Cosmo
- Percy Helton as Hotel Desk Clerk
- Raymond Guth as Veterinarian
- Francis De Sales as Doctor
- Lee Miller as Sgt. Brice
- #236: The Case of the Deadly Debt 4/1/65
- Chris Robinson as Carl Talbert
- Joe De Santis as Louie Parker
- Gregory Morton as Steve Radom
- Joan Huntington as Kitty Delaney
- Max Showalter as Charles Judd
- Robert Quarry as Danny Talbert
- Allison Hayes as Stella Radom
- Sheila Bromley as Mrs. Talbert
- Willis Bouchey as Judge
- Madgel Dean as Mrs. Johnson
- Emile Meyer as Ed Talbert
- Alex Bookston as Station Master
- Lee Miller as Sgt. Brice
- Johnny Silver as Eddie (Waiter in Night Club)
- Jimmy Cross as Waiter in Hotel
- #237: The Case of the Gambling Lady 4/8/65
- Peter Breck as Peter Warren
- Jesse White as Tony Cerro
- Ruta Lee as Irene Prentice
- Myrna Fahey as Myrna Warren
- Benny Baker as Jerome Bentley
- Kevin Hagen as Jacob Leonard
- John Rayner as Ned Beaumont
- Dan Seymour as Croupier
- Harry Holcombe as Mr. Big
- Kenneth MacDonald as Judge
- Willis L. Robards as Business Man
- Pitt Herbert as Coroner's Physician
- Bebe Kelly as Cocktail Waitress
- Pepper Curtis as Secretary
- Adair Jameson as Teller
- #238: The Case of the Duplicate Case 4/22/65
- Martin West as Herbie Cornwall
- Don Dubbins as Burt Blair
- Susan Bay as Millie Cornwall
- Steve Ihnat as Charlie Parks
- David Lewis as A. K. Dudley
- Herbert Voland as Ernest Hill
- Audrey Larkin as Miss Dahlbet
- Dave Willock as Bartender
- Douglas Dumbrille as Judge
- Irene Anders as Elevator Operator
- Robert Nelson as Detective
- Don Lynch as Policeman
- Gil Frye as First Technician
- Larry Barton as Second Technician
- #239: The Case of the Grinning Gorilla 4/29/65
- Victor Buono as Nathon Fallon
- Charlene Holt as Helen Cadmus
- Robert Colbert as F. A. Snell
- Lurene Tuttle as Josephine Kempton
- Gavin Mac Leod as Mortimer Hershey
- Bartlett Robinson as Sydney Hardwick
- Harvey Stevens as Benjamin Addicks
- Robert Foulk as Sergeant Deputy
- Jim Boles as Estate Guard
- Tommy Farrell as Jefferson
- Janos Prohaska as Gorilla
- True Boardman as Morgue Attendant
- Ted Stanhope as Waiter
- Charles Stroud as Animal Regulation Man
- #240: The Case of the Wrongful Writ 5/6/65
- James Shigeta as Ward Toyama
- Philip Abbott as Harry Grant
- Peter Whitney as Capt. Otto Varnum
- Bobby Troup as Smitty
- Katherine Squire as Esther Norden
- Douglas Henderson as Frank Jones
- Henry Beckman as Albert King
- Nobu McCarthy as Sally Choshi
- Francine York as Ursula Quigley
- Bill Zuckert as Judge Simpson
- Douglas Evans as Judge
- #241: The Case of the Mischievous Doll 5/13/65
- Ben Cooper as Jasper
- Mary Mitchel as Dorrie Ambler/Minerva Minden
- Allyson Ames as Rita Jasper
- Marge Redmond as Henrietta Hull
- Paul Lambert as Del Compton
- Phil Arthur as Joe Billings
- Kenneth MacDonald as Second Judge
- Charles Martin as Judge
- Stanley Clements as Second Taxi Driver
- Byron Foulger as Airport Clerk
- William Boyett as Police Sergeant
- Lee Miller as Sgt. Brice
- Holly Harris as Woman Bystander
- Alan Fordney as Man Bystander
- Philip Harron as First Taxi Driver
- Jack Fife as Man at Airport
- Ann Staunton as Woman at Airport