 | Robert Hays als D.H. 'Hank' Mercer / Biff Deegan |
 | Catherine Mary Stewart als Marissa |
 | Christopher Murney als Lt. Greenberg |
 | Fred Gwynne als Victor Greville |
 | Celeste Holm als Claire |
 | Jonathan Moore als Nicholas Rubinstein |
 | Martin Neufeld als Pete |
 | Michael Copeman |
| Bunty Webb |
 | Eric Keenleyside |
 | Robin Ward |
| Eric Fink |
| Thick Wilson |
| Al Bernardo |
 | Louis Di Bianco |
 | Marc Gomes |
| Raymond Hunt |
| James Walton |
 | Lynne Cormack |
 | Lynne Gorman |
| Robbi Baker |
| Alan Rose als Tony (uncredited) |
 | Jacques Sandulescu als Timothy (uncredited) |
 | Lewis J. Stadlen als Norman Wagstaff (uncredited) |
| Gavin Steed als Roger Delacroix (uncredited) |
| Mel Damski | Director |
| Karen Hendel | Casting |
| Penny Hynam | Script Supervisor |
| Michael Norell | Story |
| Donald H. Birnkrant | Director of Photography |
| Gavin Mitchell | Production Design |
| Patricia Green | Makeup Artist |
| Gerry Arbeid | First Assistant Director |
| Mel Arrighi | Novel |
| Rod Haykin | Sound |
| Maureen Fitzgerald | Production Accountant |
| Keith Large | Production Manager |
| Rick Hinson | Assistant Sound Editor |
| Tim Donahue | Visual Effects Art Director |
| Judy Groffman | Producer's Assistant |
| Ramona Teisan | Production Controller |
| Mark Snow | Original Music Composer |
| Stanley Neufeld | Executive In Charge Of Production |
| Melody Comrie | Production Coordinator |
| Robert McCart | Second Assistant Director |
| Susanne Gervay | Negative Cutter |
| David Martell | Assistant Editor |
| Mick McAfee | Post Production Supervisor |
| Marcus Tate | Visual Effects Camera |
| Cameron McDonald | Camera Operator |
| Deirdre Bowen | Casting |
| Tom Brocato | Publicist |
| Patti Unger | Wardrobe Designer |
| Michael Norell | Teleplay |
| William Mesa | Visual Effects Supervisor |
| Brian O'Hara | Transportation Coordinator |
| Rich Harrison | Sound Effects |
| Andy Siegel | Story |
| Joanne D'Antonio | Editor |
| Steve Shewchuk | Set Decoration |
| James D. Brown | Hairstylist |
| Chris Biden | Property Master |
| Ernie F. Orsatti | Stunt Coordinator |
| John Mick | Music Editor |
| Peter Nelson | Producer |
