Obsada:

• John Lithgow Dr. John Mathewson
• Richard Council Government University Lab
• Robert Schenkkan Government Aide - University Lab
• Paul Austin General - University Lab
• Adrian Sparks Scientist - University Lab
• Curt Dempster Scientist - University Lab
• Bran Ferren Lab Assistant - University Lab
• Christopher Collet Paul Stephens - Ithaca
• Jill Eikenberry Elizabeth Stephens - Ithaca
• Cynthia Nixon Jenny Anderman - Ithaca
• Gregg Edelman Science Teacher - Ithaca
• Abraham Unger Roland - Ithaca
• Robert Sean Leonard Max - Ithaca
• David Quinn Tennis - Ithaca
• Geoffrey Nauffts Craig - Ithaca
• Katherine Hiler Emma - Ithaca
• Trey Cummins Terry - Ithaca
• Steve Borton Local FBI Agent - Ithaca
• Harlan Cary Poe Local FBI Agent - Ithaca
• Ned Schmidtke Jenny' Father - Ithaca
• Sarah Burke Jenny's Mother - Ithaca
• Allen DeCheser Barnaby - Jenny's Brother, Ithaca
• Arthur De Cheser Barnaby - Jenny's Brother, Ithaca
• John Mahoney Lt. Colonel Conroy - Science Fair
• Fred G. Smith Conroy's Lieutenant - Science Fair
• JD Cullum Eccles - Science Fair
• Manny Jacobs Moore - Science Fair
• Charles Fields Price
• Eric Hsiao Salto - Science Fair
• Trevor Bolling Halley's Comet Kid - Science Fair
• Steve Blum Laser Efficiency Kid - Science Fair
• Heather Rose Flirting Kids - Science Fair
• Bruce Smolanoff Flirting Kids - Science Fair
• Joan Kendall Registrar - Science Fair
• John Doumanian Cabbie - Science Fair
• Tom Tarpey Injection Doctor - Science Fair
• Roger Caine FBI - Science Fair
• Edward D. Murphy FBI - Science Fair
• Dee Ann McDavid FBI - Science Fair
• Joan Harris Barbara Collins - Science Fair
• Kerry Donovan Himself - WBNG News, Science Fair
• Ken Chapin Command - Nuclear Emergency Search Team
• Peter McRobbie Electronics - Nuclear Emergency Search Team
• Warren Keith Computers - Nuclear Emergency Search Team
• Bruce Jarchow Interrogator, Nuclear Emergency Search Team
• Stephen Markle Interogator - Nuclear Emergency Search Team
• Al Cerullo Helicopter Pilot - Nuclear Emergency Search Team
• Richard Jenkins Radiation Controls Officer - Medatomics Lab
• Sully Boyar Ben, Night Guard Medatomics Lab
• Timothy Carhart Charlie - Relief Guard Medatomics Lab
• Fred Melamed Howard, Guard Medatomics Lab
• Warren Manzi Day Attendant, Medatomics Lab
• Michael Telesco Receptionist Medatomic Lab
• Frank Ferrara SWAT Team - Medatomics Lab
• Jimmie Ray Weeks SWAT Team - Medatomics Lab
• William Weslow SWAT Team - Medatomics Lab
• Dan Butler SWAT Team
• Steve Zettler SWAT Team - Medatomics Lab
• Richard Caselnova SWAT Team - Medatomics Lab
• Craig Austin Bus Heckler
• Deborah Gibson Statysta