| Priscilla Lane | .... | Patricia Martin |
| Robert Cummings | .... | Barry Kane |
| Otto Kruger | .... | Charles Tobin |
| Alan Baxter | .... | Mr. Freeman |
| Clem Bevans | .... | Neilson |
| Norman Lloyd | .... | Frank Fry |
| Alma Kruger | .... | Henrietta Sutton |
| Vaughan Glaser | .... | Phillip Martin |
| Dorothy Peterson | .... | Mrs. Mason |
| Ian Wolfe | .... | Robert the Butler |
| Murray Alper | .... | Mac, Truck Driver |
| Kathryn Adams | .... | Mrs. Brown, Young Mother |
| Pedro de Cordoba | .... | Bones |
| Billy Curtis | .... | 'Major,' the Midget |
| Marie LeDeaux | .... | Tatania, the Fat Woman |
| Anita Sharp-Bolster | .... | Lorelei |
| Jean Romer | .... | Marigold, Siamese Twin |
| Lynne Romer | .... | Annette, Siamese Twin |
| Hardie Albright | .... | Detective (uncredited) |
| Oliver Blake | .... | Detective (uncredited) |
| Veda Ann Borg | .... | Actress on movie screen |
| Al Bridge | .... | Marine Sergeant (uncredited) |
| Ralph Brooks | .... | Dance extra (uncredited) |
| Paul E. Burns | .... | Farmer (uncredited) |
| Don Cadell | .... | F.B.I. man (uncredited) |
| Frances Carson | .... | Society woman (uncredited) |
| Jack Cheatham | .... | Detective (uncredited) |
| Hans Conried | .... | Edward (uncredited) |
| Kernan Cripps | .... | Man in movie audience (uncredited) |
| Mary Curtis | .... | Midget (uncredited) |
| Norma Drury | .... | Refugee mother (uncredited) |
| Ralph Dunn | .... | F.B.I. man at Mason's house |
| John Eldredge | .... | Footman (uncredited) |
| Paul Everton | .... | Bus man (uncredited) |
| Pat Flaherty | .... | George (uncredited) |
| James Flavin | .... | Motorcycle cop (uncredited, voice) |
| Eddie Foster | .... | Driver for saboteurs (uncredited) |
| Jack Gardner | .... | Pat's taxi driver (uncredited) |
| Eugene Gericke | .... | Worker (uncredited) |
| Gus Glassmire | .... | Mr. Pearl (uncredited) |
| William Gould | .... | Stranger (uncredited) |
| Charles Halton | .... | Sheriff (uncredited) |
| Vinton Haworth | .... | Other man in the movie (uncredited) |
| Margaret Hayes | .... | Wife in movie (uncredited) |
| Samuel S. Hinds | .... | Foundation leader (uncredited) |
| Alfred Hitchcock | .... | Man in front of NY drugstore |
| Selmer Jackson | .... | F.B.I. Chief (uncredited) |
| Milton Kibbee | .... | Man killed in movie theater |
| Rex Lease | .... | Deputy (uncredited) |
| William A. Lee | .... | Worker (uncredited) |
| Alexander Lockwood | .... | Marine (uncredited) |
| Nancy Loring | .... | Young mother (uncredited) |
| Lou Lubin | .... | Man (uncredited) |
| Jimmie Lucas | .... | Taxi driver (uncredited) |
| Frank Marlowe | .... | Man in Newsreel Truck (uncredited) |
| Kermit Maynard | .... | Cow hand (uncredited) |
| Margaret Ann McLaughlin | .... | Baby Susie Brown (uncredited) |
| Dick Midgley | .... | F.B.I. man (uncredited) |
| Walter Miller | .... | Midget (uncredited) |
| Belle Mitchell | .... | Adele, the maid (uncredited) |
| Margaret Moffatt | .... | Neighbor (uncredited) |
| Gene O'Donnell | .... | Jitterbug (uncredited) |
| George Offerman | .... | Worker (uncredited) |
| Emory Parnell | .... | Husband in movie (uncredited) |
| Ruth Peterson | .... | Society woman (uncredited) |
| Lee Phelps | .... | Plant Security (uncredited) |
| Paul Phillips | .... | Driver (uncredited) |
| Gerald Pierce | .... | Elevator operator (uncredited) |
| Cyril Ring | .... | Party guest (uncredited) |
| William Ruhl | .... | Deputy marshal (uncredited) |
| Jeffrey Sayre | .... | Henchman (uncredited) |
| Shadow | .... | Dog (uncredited) |
| Charles Sherlock | .... | Barry's taxi driver (uncredited) |
| Byron Shores | .... | Detective (uncredited) |
| Carol Stevens | .... | Deaf Man's Companion (uncredited) |
| Harry Strang | .... | Policeman (uncredited) |
| Virgil Summers | .... | Ken Mason (uncredited) |
| Torin Thatcher | .... | Man (uncredited) |
| Jean Trent | .... | Blonde aircraft worker (uncredited) |
| Archie Twitchell | .... | Motorcycle cop (uncredited, voice) |
| Dale Van Sickel | .... | F.B.I. assistant - phone operator |
| Claire Whitney | .... | Wife in movie audience (uncredited) |
| Matt Willis | .... | Sheriff (uncredited) |
| Marjorie Wood | .... | Farmer's wife (uncredited) |
| Will Wright | .... | Company official (uncredited) |
| Barton Yarborough | .... | First F.B.I. man at Mason's house |
| Duke York | .... | Driver, deputy (uncredited) |