- Yvette Mimieux - Pat Holmes
- Sam Waterston - Mark
- Dean Stockwell - Dr. Rudy Devereux
- Tim Rooney - Wylie Hamilton
- Victor French - Jack
- Elizabeth Rogers - Miss Trilling
- Rupert Crosse - George Parker
- Diana Muldaur - Jeannie Orloff
- Joan Marshall - Charlene Ross
- Kym Karath - Margaret Hanson
- Virginia Gregg - Grace Temple
- Larry Parks - Dr. Steven Waller
- Tige Andrews - Roy Winters
- William Fawcett - Cox
- Dorothy Malone - Rena Ladovan
- Joby Baker - Jerry House
- Dick York - Harry Benton
- Jason Wingreen - Painter
- Donald Randolph - Dr. John Grosseto
- Susan Strasberg - Barbara Miller
- Ellen Burstyn - Anne Garner
- Edward Platt - Dr. Tom Paulson
- Dorothy Provine - Sally Boles
- Noreen Corcoran - Nurse Mary Thompson
- Michael Evans - Charles LeFevre
- Pippa Scott - Dr. Elizabeth Cullus
- Cliff Norton - Joe Gatson
- Margaret O'Brien - Nurse Lori Palmer
- Joseph Schildkraut - Dr. Maxwell Keller
- Bill Mumy - Jeffey
- Joan Hackett - Karen Welby
- Alex Nicol - David Graham
- Steven Geray - Frank Chernak
- Bert Remsen - Dr. Tom Belmanno
- Dean Jagger - Lt. Gen. John Sparrow
- Joanne Linville - Elizabeth Thornley
- Colleen Dewhurst - Eleanor Markham
- Otto Kruger - Louis Conrad
- Abraham Sofaer - Shahzi Saund
- Mike Kellin - Dr. Larry Phelen
- Betty Bronson - Wilma McHenry
- Steven Hill - Dr. Chandra Ramid
- Joan Freeman - Ellen Hall
- Roger Davis - Karl Bjorstrand
- Olympia Dukakis - Anna Nieves
- Jackie Joseph - Ellie
- George Macready - Harper Faring
- Constance Ford - Reba Guy
- James Caan - Charley Johnson
- Gloria Swanson - Julia Colton
- Robert Strauss - Mike Martin
- Aki Aleong - Dr. King
- Jean Hagen - Nurse Mary Ogilvy
- Martine Bartlett - Mrs. Goodwin
- Anna Lee - Mrs. Frances Alland
- Mary Murphy - Janet Logan
- Greg Morris - Lincoln Ball
- William Demarest - Mr. Aimes
- Kathryn Hays - Gina Beemis
- Lois Smith - Libby Clayton
- Thomas Gomez - Truxton Bramley
- Bob Denver - Dr. Paul Garrett
- Glenda Farrell - Vera Dennis
- Miyoshi Umeki - Hana Shigera
- Molly Picon - Ida Forman
- Ralph Bellamy - Dr. L Richard Starke
- Barbara McNair - Mareema Kamba
- Danielle De Metz - Nurse Danielle Mercier
- Frank Overton - John Oliver
- Patricia Breslin - Marion French
- Jack Lord - Dr. Frank Michaels
- Walter Pidgeon - Dr. Charles Priest
- Gena Rowlands - Helen Scott
- Lee Philips - Dr. Arthur Colby
- Diana Van der Vlis - Virginia Martin
- Roberto Contreras - Santos Esqueda
- Robert Walker Jr. - Neal Tomlinson
- Edith Atwater - Miss Thorton
- Douglas Fairbanks Jr. - Dr. Robert Devlin
- George Savalas - Aristos
- Beverly Adams - Student Nurse (uncredited)
- Lana Wood - Judy Gaer
- Suzy Parker - Serena Norcross
- Josephine Hutchinson - Amelia Blair
- Ned Glass - Nate Martin
- Walter Burke - Hotel Clerk
- Stanley Clements - Mr. Riccio
- Paul Stewart - Dr. Giuseppe Muretelli
- Dick Wessel - Sam Dlugash
- Robert Young - Dr. Gilbert Winfield
- Stuart Erwin - Dave Lesser
- Frank Puglia - Joe Crosetti
- Barbara Bel Geddes - Dr. Ruth Halliman
- Peter Brocco - Druggist
- Earl Holliman - Capt. Bob Hill
- Hazel Court - Norma Hobart
- Tippy Walker - Lois Gibbon
- Elizabeth Allen - Katherine West
- Madge Blake - Nurse Helen Phipps
- Tony Bill - Thomas Hartwood
- Morgan Brittany - Harriet Kirsh
- Donna Loren - Anna Perrona
- James Flavin - John Dolan
- Kim Hunter - Emily Field
- Charla Doherty - Kathy Calvert
- Alan Reed - Joe Belasco
- Susan Silo - Angie
- Barbara Young - Saleslady
- Lawrence Montaigne - Raymond Rossi
- Harry Townes - Gerald Prince
- Jack Weston - Dr. Justin Muntag
- Ted Knight - Henryk
- Alex Gerry - Arthur Agurski
- Anne Francis - Kathy Stebbins
- Irene Dailey - Sara Anderson
- Gloria Talbott - Jerry Cunningham
- Linda Watkins - Mrs. Keeler
- Pamela Duncan - Dorothy
- Jean Stapleton - Nurse Whitney
- Beatrice Straight - Pamela Rainey
- Barry Gordon - Billy Hoffman
- Dick Foran - Paul Adams
- Kathy Garver - Tracey Richards
- Joseph Cotten - Charles Ladovan
- Dina Merrill - Evelyn LeFevre
- Jeremy Slate - Dr. Anthony Tredman
- Arte Johnson - Bud Fowler
- Walter Brooke - William Fredericks
- Scott Marlowe - Dr. Eddie Moore
- Hope Summers - Madge
- Joe Mantell - Theodore Roosevelt Hopkins
- Cyril Ritchard - Justin Fitzgibbons
- Glynis Johns - Sister Brigid Marie
- Cliff Osmond - Robert Slade
- Lauren Bacall - Virginia Herson
- Philip Abbott - Dr. David Key
- George Voskovec - Dr. Charles Hodiak
- Robert Winston - Army Corporal
- Donnelly Rhodes - Chris McKenna
- Robert Redford - Mark Hadley
- Gina Gillespie - Little Girl
- Carolyn Jones - Evy Schaller
- Harry Guardino - Gerald Hastings
- Inga Swenson - Paula Waller
- Richard Davalos - Gordon Hall
- Henry Beckman - Sam Allen
- Robert Warwick - Dr. Bromley
- Betty Field - Mrs. Harper
- Peter Haskell - Paul Williams
- Alberta Nelson - Dr. Ruth Carrison
- Fritz Weaver - Arthur Hobler
- James Franciscus - Stan Fisher
- Iphigenie Castiglioni - Mrs. Krolik
- Mary Badham - Cora Sue Henty
- Vito Scotti - Jesus Munoz
- Moyna MacGill - Neighbor
- Stefan Gierasch - Willie Kovar
- Ed Asner - Dr. Frank Williams
- Sue Randall - Emily Gunderson
- Al Ruscio - Ed Rutherford
- Forrest Tucker - Max Beemis
- Richard Anderson - Dr. Norman Phelps
- Rhys Williams - Dr. Chester Wayne
- Barbara Eden - Nurse Judy Gail
- Darryl Hickman - Harlan Thomas
- Nancy Malone - Nurse Jean Dennis
- James Shigeta - Dr. Roy Shigera
- Marta Kristen - Darleen Landon
- Ed Nelson - Dr. Keith Judge
- Anne Helm - Helen Keening
- Marion Ross - Nurse Ann Patterson
- Carl Benton Reid - Dr. George Garrison
- Cesar Romero - Dr. Paul Marino
- Ann Harding - Mae Priest
- Murray Hamilton - Lt. Dan Hargrave
- Murray Hamilton - Dr. Haldore Mattern
- Peg La Centra - Loretta Anderson
- Brooke Bundy - Linda Robbins
- George Grizzard - Douglas Martin
- Sal Mineo - Carlos Mendoza
- Michael Callan - Charles Devereaux
- Jon Lormer - Mr. Teale
- Kelly Corcoran - Hubby Kimball
- Terry Carter - Ernie Mann
- Jack Warden - Ernie Duffy
- Gerald S. O'Loughlin - Gus Pochek
- Joan Blondell - Dolly Marlowe
- Lisa Loring - Cindy Norcross
- Estelle Winwood - Adeline Blair
- Eddie Firestone - Joe Fitch
- Geraldine Brooks - Laura Bailey
- Donald Harron - Dr. Ian MacDuff
- John Qualen - Mr. Callahan
- Peter Duryea - Larry
- Larry Blyden - Eddie Hiller
- Connie Gilchrist - Mary Markham
- Angie Dickinson - Carol Tredman
- Malcolm Atterbury - Asa McConnell
- Curt Conway - Judge Reynolds
- Herschel Bernardi - Pico
- Herschel Bernardi - Nathan Agurski
- Francis X. Bushman - Mr. Cooper
- James Mason - Dr. Maxwell Becker
- Darren McGavin - Prof. Felix Holman
- Diana Sands - Irene Rush
- Beverly Garland - Julia Dressard
- Beverly Garland - Susan Hastings
- James Earl Jones - Dr. Lou Rush
- Gertrude Flynn - Eleanor Quayle
- Gertrude Flynn - Technician
- Sandy Kenyon - Dr. William Galdi
- John Newland - Paul Montgomery
- Leonard Stone - Fred Payson
- Charles McGraw - Dr. Kenneth Hasker
- Charles McGraw - Fred Rainey
- Bernard Kates - Irving Forman
- Bernard Kates - TV Director
- Clegg Hoyt - Mac
- Whit Bissell - Dr. Kenneth Kline
- James Daly - Morgan Bannion
- Ivan Dixon - Dr. Arthur Staples
- Ivan Dixon - Detective
- Pat Crowley - Janet Parker
- Pat Crowley - Claire Sutton
- Corey Allen - Dr. Harris
- Corey Allen - Jerome Pine
- Janice Rule - Lila Gregg
- Janice Rule - Joan Cartwright
- Jeff Donnell - Evelyn Driscoll
- Kim Darby - Sandy Kimball
- Kim Darby - Patsy Carey
- Mona Bruns - Landlady
- James Anderson - Spencer
- Lee Marvin - Dr. Paul Probeck
- Lee Marvin - Buddy Bishop
- Jan Murray - Kenny Hallerton
- Fay Spain - Sally Winters
- Fay Spain - Emily Buchanan
- Anne Meacham - Rose Clayton
- Lois Nettleton - Hildy Pochek
- Lois Nettleton - Lisa Dowling
- Noah Keen - Dr. Leland Laughlin
- Peter Helm - Tommy Rainey
- Richard Kiley - Fred Carroll
- Diana Hyland - Marguerite Williams
- Diana Hyland - Dr. Lilith McGraw
- John Hoyt - Dr. Bernard Motley
- Marge Redmond - Clara McCloskey
- Marge Redmond - Mrs. Barnett
- Victor Jory - Dr. Oscar Whalen
- George Mathews - Dr. Willard Ryson
- Alfred Ryder - Dr. Tony Stewart
- Barbara Parkins - Annie Grant
- Carroll O'Connor - Roy Drummond
- Carroll O'Connor - David Burnside
- Jack Albertson - Cary Fain
- David Sheiner - Fred Hunter
- Paul Carr - John Doe
- Kevin McCarthy - Dr. Harvey Gruboldt
- Kevin McCarthy - Dr. Omar Larson
- S. John Launer - Dr. Sadvary
- John Ashley - Mitch
- Jack Donner - Dr. John Shea
- Michael Constantine - Dr. Ernest Miller
- Stanley Adams - Dr. Alexander Shoates
- Bert Freed - Director
- Bert Freed - Dr. Donald White
- Eddy Waller - Dr. Millard Eakins
- Theodore Bikel - Dr. Mahmel Homatka
- Ellen Corby - Ainsley Hallie
- Leslie Nielsen - Walter Burton
- Leslie Nielsen - Harry Kleber
- Henderson Forsythe - Dr. Stephen Kildare
- Lola Albright - Gertrude Carey
- Charles Macaulay - Jameson Black
- Richard Eyer - Bob Eckert
- John Williams - Dr. George Hazard
- Mariette Hartley - Ellen Hendricks
- Barbara Barrie - Peggy Farrow
- Henry Silva - Ed Carson
- Betsy Jones-Moreland - Ruth Jonah
- Joe De Santis - Bruno Rossi
- Joe De Santis - Enrico Conti
- Polly Bergen - Janice Graham / Cathy Brandon
- Claudine Longet - Mme. Dupres
- Brian Keith - Alfred Freely
- Clancy Cooper - Dunleavy
- Clancy Cooper - Janitor
- Leonard Nimoy - Harry
- Paul Mantee - Neurosurgeon
- Steve Ihnat - Dr. James Rothson
- Conlan Carter - Intern (uncredited)
- James Whitmore - Henry Clay Kincaid
- Johnny Washbrook - Tommy Dennis
- Mary Astor - Martha Lantzinge
- Mary Astor - Aunt Frances
- Collin Wilcox Paxton - Winona Pine
- Collin Wilcox Paxton - Lorena Henty
- Beulah Quo - Natsu Shigera
- Jack Ging - Dr. Paul Graham
- Walter Slezak - Dr. Max Jurgens
- Bill Bixby - Dr. John Grant
- Bill Bixby - Dr. Ben Mollenhour
- Harry Ellerbe - Dr. Gary Dawson
- Adam Williams - Ralph Walker
- Frank Aletter - Dr. Jerry Helvick
- Marianna Hill - Gina Craig
- Joyce Van Patten - Julie Belmanno
- Joyce Van Patten - Ruth Scully
- Allan Hunt - Rusty
- Patience Cleveland - Nurse Rowe
- Patience Cleveland - Nurse Jackie Barnett
- Dennis Patrick - Franklin V. Powers
- Leonid Kinskey - Sam Weiss
- Cheryl Holdridge - Nurse Nancy Reynolds
- Anne Baxter - Nora Willis
- Kyle Johnson - Davey Mann
- Paul Comi - Dr. Thomas Kane
- Jeanette Nolan - Fanny Devalon
- Jeanette Nolan - Annie
- Chester Morris - Tom Monahan
- Peter Whitney - Carl Temple
- Peter Whitney - Dr. Nat Franklin
- Jules Munshin - Sylvan Pappinax
- Patricia Smith - Norma Jasper
- Ron Howard - Jerry Prentice
- Vic Perrin - Veterinarian
- Mercedes McCambridge - Sister Teresa
- Tisha Sterling - Sheila Winfield
- Harry Basch - Dr. Milton Bremner
- Ben Wright - Mr. Baker
- Ben Wright - Dr. Van Zandt
- Joanna Barnes - Dr. Suzanne Shary
- Tom Bosley - Harry Markham
- Ted Eccles - Dilmore McConnell
- Phyllis Love - Ruth Wandemeir
- Shelley Morrison - Mrs. Martinez
- Shelley Morrison - Mrs. Ruiz
- Robert Reed - Judd Morrison
- Laura Devon - Sister Benjamin
- Robert Culp - Matt Hendricks
- Robert Culp - Dr. Jesse Hartwood
- Lesley Ann Warren - Bonda Jo Weaver
- Dan Tobin - Jonsey
- Hayden Rorke - Bishop
- Hayden Rorke - Dr. Norman Hackett
- Anjanette Comer - Carol Montgomery
- Barbara Rush - Madge Bannion
- Suzanne Pleshette - Julie Lawler
- Suzanne Pleshette - Nurse Cathy Benjamin
- Suzanne Pleshette - Ellen Tracey Adams
- David Opatoshu - Fred Kirsh
- Eduardo Ciannelli - Pappas
- Eduardo Ciannelli - Angelo Delvecchio
- Basil Rathbone - Frederick Foray
- Beah Richards - Alice
- Joanna Pettet - Yvonne Barlow
- Eileen Heckart - Nurse Jenny Freesmith
- Peter Falk - Dr. Matt Gunderson
- Edward Andrews - Arthur Penmore
- Walter Matthau - Franklin Gaer
- Robert B. Williams - Louis Parker
- William Schallert - Inspector
- William Schallert - Tom Scola
- Dick Sargent - Dr. Paul Willis
- Barbara Baxley - Kitty Scola
- Fay Bainter - Sister Mike
- Charles Aidman - James Grady
- Jack Carter - Willie Guy
- Jack Carter - Ted Galahad
- Julie Adams - Ginny Nelson
- Elizabeth MacRae - Nurse Carrie Palmer
- Stuart Nisbet - Mr. Garst
- Alexander Lockwood - Harold Lee
- Ruth McDevitt - Nurse Adele Fromm
- John Marley - Dr. Xavier Miller MD
- John Marley - Judge Haines
- Peter Hansen - Mr. Sloan
- Ross Martin - Dr. Bill Mitchell
- Ross Martin - Oscar Clayton
- John Cassavetes - Makin Saund
- Richard Benjamin - Dr. Adam Barstow
- Richard Benjamin - Intern
- Norman Alden - Bernie (uncredited)
- Phyllis Hill - Mrs. Holmes
- Phyllis Hill - Mrs. Beaton
- Peggy Wood - Katie Harris
- Nina Foch - Georgia Pettigrew
- Tom Tryon - Dr. William Ellis
- Ross Elliott - Asst. District Attorney
- Hans Conried - Oliver Blair
- Anne Jeffreys - Jill Sloan
- Patrick O'Neal - Dr. Harvey Robert Jones
- Eli Mintz - Sam Stone
- Carol Eve Rossen - Dr. Lois Bower
- Carol Eve Rossen - Dr. Emmy Lorfield
- Charles Bronson - Harry Gregg
- Susan Bay Nimoy - Nurse Leah Bradley
- Ruth White - Hester Cullen
- Joe Maross - Nicky Buchanan
- Burt Mustin - Mr. Franklin
- Burt Mustin - Dibbedee
- Charles Lampkin - Eddie
- Crahan Denton - Fred Dennis
- Parley Baer - Dr. James Connors
- Michael Forest - Julian Forman
- Jocelyn Brando - Doris Phillips
- Eddie Albert - Dr. Norman French
- Mala Powers - Julie Michaels
- Robert Sorrells - Big Green
- Audrey Dalton - Jo Grant
- Sorrell Booke - MacAllister Thane
- Sorrell Booke - Julius Orloff
- Beau Bridges - Bob Colby
- Paul Burke - Lawrence Crane
- John Fiedler - Father Hughes
- John Fiedler - D.V. Dromley
- John Fiedler - Mr. Calhoun
- Ford Rainey - Dr. Walter Untermeyer
- Ford Rainey - Dr. Andy Meadows
- Yvonne Craig - Carol Devon
- Les Tremayne - Dr. Keith Bresson
- Les Tremayne - Dr. Arthur Jansen
- Leigh Chapman - Miss Adams
- Robert Random - Eddy York
- Alida Valli - Luisa Brabante
- Sandra Gould - Mrs. Gentry
- Louise Sorel - Eloisa Ruiz
- Andrew Prine - Dr. Roger Helvick
- Andrew Prine - John Bardeman
- Andrew Prine - Dr. Louis Miller
- Burt Brinckerhoff - Charles Shannon
- Burt Brinckerhoff - Vincent Doyle
- Mabel Albertson - Hannah Lacey
- Rusty Lane - Gus Markham
- Lester Dorr - Mr. Benson
- Edmon Ryan - Mr. Hallerton
- Edmon Ryan - Bill Revere
- Rosemary DeCamp - Angela Faring
- Frank Maxwell - Vincent Thompson
- Sharon Farrell - Rachel Field
- Sharon Farrell - Glenda Hester
- Sharon Farrell - Jeanne Sawyer
- Jack Hawkins - Justin Post
- Ricardo Montalban - Damon West
- Richard Beymer - Rev. Jack Elder
- Clu Gulager - Dr. Norman Gage
- Susan Oliver - Dr. Jessie Martel
- Susan Oliver - Carol Logan
- Robert Karnes - Harry Buford
- Robert Karnes - Monte
- Miriam Colon - Rani Stewart
- Miriam Colon - Pila
- Diane Baker - Amy Post
- Diane Baker - Emma Swader
- Anne Seymour - Mrs. Canford
- Zohra Lampert - Rose Kemmer
- Zohra Lampert - Myra Krolik
- Frances Reid - Emmy Foray
- Helen Kleeb - Nurse Bernard
- Nora Marlowe - Mrs. Smith (uncredited)
- Nora Marlowe - Mamie Delaney
- Michael McGreevey - Tommy Adams
- Peggy Rea - Dorothy Gitner
- Peggy Rea - Nurse Helen O'Hara
- Peggy Rea - Nurse Carrie
- Stafford Repp - Eddie Boykin
- Edgar Buchanan - Judge Wilfred Manning
- Edgar Buchanan - Steve Devitt
- Sidney Blackmer - Dr. Carleton Lantzinge
- Sidney Blackmer - Dr. Andrew Bennett
- Dan O'Herlihy - Dr. Phillip Downey
- Dan O'Herlihy - Mark Sloan
- Dan O'Herlihy - John Patrick McHenry
- Dan O'Herlihy - Mark Addison
- Lloyd Bochner - Dr. Harry Nelson
- John Anderson - Vernon Hackett
- Mario Alcalde - Luis Nieves
- Pat Hingle - Lloyd Jason
- Pat Hingle - Dr. Edward Swader
- Grandon Rhodes - Dr. Evans
- Paul Newlan - Carl Victor
- James Griffith - Harold Hutchinson
- James Griffith - Sims
- Fred Holliday - John Tremont
- Dabney Coleman - Dr. David Kirkson
- J. Pat O'Malley - John Doe IV
- J. Pat O'Malley - Paul Menzies
- Irene Tedrow - June Crowley
- John Larch - Dr. Victor Jonah
- James T. Callahan - Dr. Yates Atkinson
- Elinor Donahue - Sharon Calloway
- Joseph V. Perry - Antonio Pronesti
- Lillian Bronson - Frances Neilson
- Tommy Farrell - Wally
- Garry Walberg - Dr. Benjamin Lenlow
- Isobel Elsom - Mrs. Walker
- Isobel Elsom - Mrs. Silver
- Lurene Tuttle - Mrs. Parker
- Tony Dow - Bob Quincy
- Ruth Roman - Marie Quincy
- Ruth Roman - Lily Prentice
- Denver Pyle - R. E. Lenger
- Claude Rains - Edward Fredericks
- Ken Mayer - Maitre d'
- Milton Frome - Walter Goodman
- Ramon Novarro - Gasparo Paolini
- Maidie Norman - Mrs. Johnson
- Dennis Weaver - Wayne Wandemeir
- Philip Bourneuf - Dr. Wickens
- Philip Bourneuf - George Prentiss
- Lee Meriwether - Nurse Bonnie Tynes
- Lee Meriwether - Nurse Harper
- Lee Meriwether - Nurse Adams
- Lee Meriwether - Nurse Angela Springer
- Fred Astaire - Joe Quinlan
- Roger Mobley - Jamie Carroll
- Roger Mobley - Alan Burnside
- Bruce Hyde - Dr. Jeff Brenner
- Rip Torn - Dr. Nicholas Keefe
- Bill Walker - Tad
- Naomi Stevens - Mrs. Gast
- Naomi Stevens - Aunt Kasia
- Naomi Stevens - Mrs. Gitlin
- Naomi Stevens - Mrs. Mendoza
- Lew Gallo - Dr. Ned Rand
- Lew Gallo - Dr. Philip Leland
- Regis Toomey - Arthur Wheeler
- William Shatner - Dr. Carl Noyes
- William Shatner - Dr. Toby Cunningham
- Raymond Bailey - Dr. Jerry Wagner
- Paul Langton - Dr. Ian Lamb
- David Lewis - Dr. Robert Coneely
- Irene Hervey - Martha Kildare
- Claire Trevor - Nurse Veronica Johnson
- Andrew Duggan - Carl Quincy
- Jeanne Cooper - Marian Colby
- Daniela Bianchi - Francesca Paolini
- Max Showalter - Rulon Murphy
- Max Showalter - Ben Ballard
- James Frawley - Luther Bernstein
- Orville Sherman - Steward
- Connie Sawyer - Gladys
- Audrey Totter - Ella Vitnack
- Audrey Totter - Norma Littell
- Patricia Huston - Marie Hackett
- Fabrizio Mioni - Armando di Corragio
- Cloris Leachman - Rhoda Kirsh
- Harry Morgan - Francis X. Healy
- Karl Swenson - Judge
- Marlyn Mason - Laura Morrison
- Conrad Nagel - Governor Matthew Evans
- Harold Gould - Earl McCloskey
- Harold Gould - Dr. Peter Duey
- William Swan - Young Doctor
- Jerry Ayres - Phil
- Karl Weber - Dr. E. David Golden
- Bradford Dillman - Andrew Webb
- Bradford Dillman - Rev. Andrew Webb
- Bradford Dillman - Tony Warren
- Ed Begley - Joe Hogan
- Ed Begley - Henry Harris
- Ed Begley - Jamie Cousins
- Bill Quinn - Instructor
- Bill Quinn - Mr. O'Connor
- George Kennedy - Joe Cramer
- George Kennedy - Sergeant Hensley
- Norman Fell - Arnold Vitnack
- Norman Fell - Dr. Keith Mayes
- Edward Binns - Peter De Gravio
- Edward Binns - Ben Laney
- Martin Balsam - Dr. Milton Orloff
- Martin Balsam - Dr. Carl Noyes
- Martin Balsam - Benny Orloff
- Martin Balsam - Ned Lacey
- Paulene Myers - Technician
- Paulene Myers - X-Ray Technician
- Paulene Myers - Dr. Jean Sackley
- Joyce Bulifant - Judy Cannon
- Chris Hughes - Jerry Tucker
- Irv Pearlberg
- Henry Colman
- Douglas Benton
- Herbert Hirschman
- Norman Felton
- Robert F. O'Neill
Naomi Stevens hace el papel de Mrs. Gast.
Ricardo Montalban hace el papel de Damon West.
Cesar Romero hace el papel de Dr. Paul Marino.
Peter Falk interpreta a Dr. Matt Gunderson en la serie.
James Caan interpreta a Charley Johnson en la serie.
Claude Rains interpreta a Edward Fredericks en la serie.
James Griffith hace el papel de Harold Hutchinson.
John Qualen hace el papel de Mr. Callahan.
Leonid Kinskey hace el papel de Sam Weiss.
Robert Redford interpreta a Mark Hadley en la serie.
Capítulo disponible en las siguientes plataformas:
