 Carol WhiteCathy Palmer | Cathy Palmer |
 Paul BurkeJack Byrnes | Jack Byrnes |
 Mala PowersMeg Stone | Meg Stone |
 Scott HylandsKenneth Daly | Kenneth Daly |
 James B. SikkingJoe Menchell | Joe Menchell |
 Walter BrookeJerry Wolfe | Jerry Wolfe |
 Mathilda CalnanIlsa (as Matilda Calnan) | Ilsa (as Matilda Calnan) |
 Gene LyonsDr. Blanker | Dr. Blanker |
 Dennis PatrickDr. Parkington | Dr. Parkington |
| BBarry CahillFBI Agent Crosley | FBI Agent Crosley |
 Andrea KingBrenda Frazier (uncredited) | Brenda Frazier (uncredited) |
 Edith AtwaterHospital Desk Nurse (uncredited) | Hospital Desk Nurse (uncredited) |
 Ron MasakPaul Fleming (uncredited) | Paul Fleming (uncredited) |
 Harry HolcombeInspector Dixon (uncredited) | Inspector Dixon (uncredited) |
| LLeon AltonMan in Ticket Line (uncredited) | Man in Ticket Line (uncredited) |
 Rachel AmesDr. Parkington's Nurse (uncredited) | Dr. Parkington's Nurse (uncredited) |
 Al CheccoHotel Clerk (uncredited) | Hotel Clerk (uncredited) |
 John DennisMechanic (uncredited) | Mechanic (uncredited) |
 Edward FaulknerCop at Dixon's Party (uncredited) | Cop at Dixon's Party (uncredited) |
 Peter HobbsCathy's Doctor (uncredited) | Cathy's Doctor (uncredited) |
| TTony ReganDetective (uncredited) | Detective (uncredited) |
 Mark Robson(uncredited) | (uncredited) |
 Jeffrey SayreCop at Dixon's Party (uncredited) | Cop at Dixon's Party (uncredited) |
 Suzanne SomersWoman on Sidewalk (uncredited) | Woman on Sidewalk (uncredited) |
 Claude StroudPet Owner (uncredited) | Pet Owner (uncredited) |
| MMark TapscottMan on Cable Car (uncredited) | Man on Cable Car (uncredited) |
