 | Anthony Perkins als Dennis Pitt |
 | Tuesday Weld als Sue Ann Stepanek |
 | Beverly Garland als Mrs. Stepanek |
 | John Randolph als Morton Azenauer |
 | Dick O'Neill als Bud Munsch |
 | Clarice Blackburn als Mrs. Bronson |
 | Joseph Bova als Pete |
 | Ken Kercheval als Harry Jackson |
 | Don Fellows als Detective |
 | Parker Fennelly als Sam Joyals (uncredited) |
 | Bill Sorrells als Cop at Beanery (uncredited) |
| Tom Gorman als First Detective (uncredited) |
| Paul Larson als Mrs. Stepanek's Boyfriend (uncredited) |
 | Gil Rogers als Man at Police Station (uncredited) |
| Dan Morgan als Man at Police Station (uncredited) |
| Stephen Geller | Novel |
| Lorenzo Semple Jr. | Screenplay |
| Noel Black | Director |
| Marshall Backlar | Producer |
| Noel Black | Producer |
| Jack Grossberg | Associate Producer |
| Lawrence Turman | Executive Producer |
| Johnny Mandel | Original Music Composer |
| David L. Quaid | Director of Photography |
| William H. Ziegler | Editor |
| Harold Michelson | Art Direction |
| Jack Martin Smith | Art Direction |
| Ann Roth | Costume Design |
| John Mortensen | Set Decoration |
| Robert Jiras | Makeup Artist |
