 | Keir Dullea als David Clemens |
 | Janet Margolin als Lisa Brandt |
 | Howard Da Silva als Dr. Swinford |
 | Neva Patterson als Mrs. Clemens |
 | Clifton James als John |
 | Richard McMurray als Mr. Stewart Clemens |
| Nancy Nutter als Maureen |
| Mathew Anden als Simon |
 | Jaime Sánchez als Carlos |
| Coni Hudak als Kate |
 | Karen Lynn Gorney als Josette |
| Janet Lee Parker als Sandra |
 | Frank Perry als Newsdealer (uncredited) |
| Frank Perry | Director |
| Eleanor Perry | Screenplay |
| Max Kurz | Gaffer |
| Steve Kesten | Production Manager |
| Paul M. Heller | Art Direction |
| Ted Trinkaus | Title Designer |
| Leonard Hirschfield | Director of Photography |
| Paul M. Heller | Producer |
| Bernard Hirschenson | Camera Operator |
| Irving Oshman | Editor |
| Theodore Isaac Rubin | Book |
| Alan Stetson | Key Grip |
| Anna Hill Johnstone | Costume Design |
| Gene Callahan | Set Decoration |
| Lee R. Bobker | Associate Producer |
| Mark Lawrence | Original Music Composer |
| Edith Hamlin | Casting |
| Lawrence Williams Jr. | Assistant Camera |
| Betty Todd | Script Supervisor |
| Herbert Nagle | Production Assistant |
| William Bayer | Production Assistant |
| Tony LaMarca | Assistant Director |
