 | Timothy Hutton als Dr. Stanley Shephard |
 | Lindsay Crouse als Dr. Diane Brady |
 | John Lone als Charlie |
 | Josef Sommer als Whitman |
 | David Strathairn als Dr. Singe |
 | James Tolkan als Maynard |
 | Danny Glover als Loomis |
 | Richard Monette als Hogan |
| Amelia Hall als Mabel |
 | Philip Akin als Dr. Vermeil |
 | Stephen E. Miller als Temp Doc |
 | David Petersen als Scatem Doc |
| Judith Berlin als E.K.G. Doc |
 | Paul Batten als Technician |
| Lovie Eli als Nurse |
| Stephen Nemeth als Lab Tech |
 | Réal Andrews als Lab Tech |
| Bob Reimer als Helicopter Pilot |
| Blair Anderson als Powell |
| Dave Ryder als Powell's Assistant |
| Herb 'Kneecap' Nikal als Indian Guide |
| Eilizabeth Aulajut als Inuit Storyteller |
| Dennis Letkeman als Air Traffic Controller |
| Paul Stanley als Canuck |
| Fred Schepisi | Director |
| Chip Proser | Screenplay |
| John Drimmer | Story |
| John Drimmer | Screenplay |
| Charles Milhaupt | Associate Producer |
| Leon Ericksen | Art Direction |
| Tom Udell | Production Accountant |
| Dar Robinson | Second Unit Director |
| Bruce Smeaton | Original Music Composer |
| Linda Lee Langdon | Wardrobe Assistant |
| Christine Wilson | Script Supervisor |
| Karen Stewart | Assistant Production Coordinator |
| Candace Koethe | Producer's Assistant |
| Chris Helcermanas-Benge | Still Photographer |
| John S. Bartley | Gaffer |
| Robert Hatfield | Production Assistant |
| Josan F. Russo | Art Direction |
| Robert Latham Brown | Production Manager |
| Horst Grandt | Property Master |
| Charles M. Wilborn | Production Sound Mixer |
| Frank E. Warner | Supervising Sound Editor |
| Bill Wylie | Sound Editor |
| Gary S. Gerlich | Sound Editor |
| Stephen Lovejoy | Assistant Editor |
| Tim Hogan | Key Grip |
| Rondi Johnson | Costume Design |
| Justis Greene | Production Manager |
| John Wardlow | Stunt Double |
| Warren Carr | Second Assistant Director |
| Susan Boyd | Hairstylist |
| Bonnie Palef | Producer's Assistant |
| Jim Van Wyck | First Assistant Director |
| Gregg Landaker | Sound Re-Recording Mixer |
| Patti Allen | Production Coordinator |
| Michelle Allen | Assistant Production Coordinator |
| Michael Westmore | Makeup Designer |
| David Willson | Construction Coordinator |
| Steve Maslow | Sound Re-Recording Mixer |
| Dan Wallin | Scoring Mixer |
| Mary Goldberg | Casting |
| Grant Swain | Property Master |
| Andrew Brown | Wardrobe Supervisor |
| Jay Engel | ADR Editor |
| Lynne Carrow | Local Casting |
| Lorraine Baird | Assistant Accountant |
| Dar Robinson | Stunt Double |
| Thomas L. Roysden | Set Decoration |
| Linda A. Brown | Makeup Artist |
| Ian Baker | Director of Photography |
| Graeme Murray | Art Direction |
| Bill Varney | Sound Re-Recording Mixer |
| Rod Parkhurst | Camera Operator |
| Norman Jewison | Producer |
| Patrick J. Palmer | Producer |
| Fitch Cady | Unit Manager |
| Miriam Weeks | Sound Editor |
| Michael Smith | Assistant Editor |
| Jacob Rupp | Stunt Double |
| Kimberley Richardson | Set Decoration |
| Jim Henrikson | Music Editor |
| Robyn Britton | Production Assistant |
| Billy Weber | Editor |
| Lorey Sebastian | Still Photographer |
| Robin Chaykin | Producer's Assistant |
| Scott Irvine | Transportation Coordinator |
| Carie DeRuiter | Main Title Designer |
| Don Levy | Unit Publicist |
