Cámara

• Victor J. Kemper — director of photography

Guion

• Robin Cook — novel
• Michael Crichton — screenplay

Sonido

• Jerry Goldsmith — original music composer

Producción

• Martin Erlichman — producer
• Sam Christensen — casting
• Joyce Robinson — casting
• Phil Rawlins — unit production manager

Montaje

• David Bretherton — editor

Vestuario y maquillaje

• Carolyn Ferguson — hairstylist
• Don Schoenfeld — makeup artist
• Carrie White — hairstylist

Arte

• Albert Brenner — production design
• Rick Simpson — set decoration

Reparto

• Geneviève Bujold — Dr. Susan Wheeler
• Michael Douglas — Dr. Mark Bellows
• Elizabeth Ashley — Mrs. Emerson
• Rip Torn — Dr. George
• Richard Widmark — Dr. Harris
• Lois Chiles — Nancy Greenly
• Hari Rhodes — Dr. Morelind
• Richard Doyle — Jim
• Alan Haufrect — Dr. Marcus
• Lance LeGault — Vince
• Michael MacRae — Chief Resident
• Frank Downing — Kelly
• Gary Barton — Computer Technician
• Betty McGuire — Nurse
• Tom Selleck — Sean Murphy
• Charles Siebert — Dr. Goodman
• William Wintersole — Lab Technician
• Ernest Anderson — First Doctor
• Harry Basch — Second Doctor
• Maury Cooper — Third Doctor
• Joni Palmer — Dance Instructor
• Joanna Kerns — Diane
• Kay Cole — Sally
• Tom Borut — Dr. Cowans
• Philip G. Brooks — Dr. Richards
• Benny Rubin — Mr. Schwartz
• David Hollander — Jimmy
• Dick Balduzzi — 1st Maintenance Man
• Gary Bisig — 2nd Maintenance Man
• Kurt Andon — 1st Cop
• Wyatt Johnson — 2nd Cop
• Mike Lally — Security Man
• John Widlock — Norman
• Duane Tucker — 1st Man in Shower
• Del Hinkley — 2nd Man in Shower
• Paul Ryan — 1st Technician
• Michael Mann — 2nd Technician
• Sarina C. Grant — Woman in Elevator
• David McKnight — Man in Elevator
• Gerald Benston — Anesthetist
• Robert Burton — Pathology Resident
• Joe Bratcher — Surgical Resident
• Ed Harris — Pathology Resident
• Martin Speer — Surgical Resident
• Roger Newman — Surgical Resident
• Paul Davidson — Surgical Resident
• Amentha Dymally — Nurse
• Lois Walden — Nurse
• Sharron Frame — Nurse
• Sue Bugden — Nurse
• Susie Luner — Nurse
• Vaughn Armstrong — Jefferson Institute Security Guard (uncredited)
• Jason Bernard — Surgical Resident (uncredited)
• Gerald Berns — Security Guard (uncredited)
• Jeffrey Corazzini — Patient (uncredited)
• Bob Dio — Subway Passenger (uncredited)
• Philip Baker Hall — Doctor (uncredited)
• Edward C. Higgins — Security Guard (uncredited)
• Mary D. Mascari — Doctor (uncredited)
• Gerry Vichi — Ambulance Driver (uncredited)
• Nicholas Worth — Patterson Institute Chief of Security (uncredited)
• Robert Burton — Pathology Resident

Dirección

• Michael Crichton — director