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24 Hours is the first and second episodes of the first season of ER.
Guest Starring (end credits): Holly Gagnier (Tracy Young), Glenn Plummer (Timmy), Vanessa Marquez (Goldman), Yvette Freeman (Haleh), Deezer D. (Malik), Abraham Benrubi (Jerry), Scott Jaeck (Dr. Steve Flint), Paul Benjamin (Mr. Ervin), Elizabeth Ruscio (Sarah Logan), Michael Fairman (Mort Harris), Julianna McCarthy (Mrs. Raskin), Troy Evans (Officer Martin), Michael Cavanaugh (Suzanne's Dad), Jeff Doucette (Larkowski), Christine Healy (Administrator), Liz Vassey (Liz), Tracey Ellis (Annette)
Co-Starring: Conni Marie Brazelton (Oligario), Ellen Crawford (Woodward), Petra Porras (Perez), Ryan Cutrona (Wilson), Angelo Dimascio, Jr. (Barr), Joe D'Angerio (Rezek), Scott Lincoln (Fitzkee), Maria Celedonio (Luisa), Jay Leggett (Canelli), Anne Gee Byrd (Harper), Sharon Schlarth (Karen Edwards), Walter F. Kelly (Specialist), Shiri Appleby (Ms. Murphy), Susanne Nitter (Roommate), Suzanne Ventulett (Suzanne), Christopher Wynne (Resident), Sally Hughes (Mrs. Harvey), Perry Anzilotti (Ed)
Featuring: Lawrence A. Mandley (Jackson), Courtnay McWhinney (Grey Haired Woman), Lou Charloff (Mr. Harvey), Jarrett Lennon (Billy), Joanna Lipari (Mom), Phyllis Ehrlich (Confused Woman), Eddie Torres (12 Year Old Boy), Shelly Desai (Cabby), Nina Henderson (Pregnant Lady), Thomas Dekker (4 Year Old Boy), Katherine Gauthier (Waitress), Suzanne Carney (Scrub Nurse #1), Gay Storm (Mrs. McCormick), Cynthena Sanders (Scrub Nurse #2), Matthew Gottlieb (Ashley), Lance Gentile (Jimmy), Ingo Neuhaus (Cop), Alex Hernandez (Trooper #1), Herbert Jefferson, Jr. (Trooper #2), Yvonne Zima (Rachel)
Uncredited: Miguel Ferrer (Mr. Parker)
Dr. Greene considers joining a private medical practice; med student John Carter arrives at County General for the first day of his internship; Dr. Ross comes into work drunk and later suspects a mother of abusing her infant son; Dr. Lewis comforts a patient who has been diagnosed with cancer; Dr. Benton performs his first operation; Nurse Carol Hathaway shocks everyone when she's brought in to the ER after a suicide attempt.