cast
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John Lithgow
John Mathewson
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Christopher Collet
Paul Stephens
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Cynthia Nixon
Jenny Anderman
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Jill Eikenberry
Elizabeth Stephens
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John Mahoney
Lt. Col. Conroy
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Richard Jenkins
Radiation Controls Officer
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Sully Boyar
Night Guard
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Timothy Carhart
Relief Guard
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Gregg Edelman
Science Teacher
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JD Cullum
Eccles (as John David Cullum)
- Abraham Unger Roland (as Abe Unger)
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Robert Sean Leonard
Max
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Fred Melamed
Howard
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Ned Eisenberg
C-4 Guy (uncredited)
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Richard Council
Government Aide
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Robert Schenkkan
Government Aide
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Steve Blum
Laser Efficiency Kid (as Richard Cardona)
- Sarah Burke Jenny's Parent
- Warren Manzi Day Attendant
- Paul Austin General
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Adrian Sparks
Scientist
- Curt Dempster Scientist
- Bran Ferren Lab Assistant
- David Quinn Tennis
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Geoffrey Nauffts
Craig
- Katherine Hiler Emma
- Trey Cummins Terry
- Steve Borton Local FBI
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Harlan Cary Poe
Local FBI
- Ned Schmidtke Jenny's Parent
- Allen DeCheser Jenny's Brother
- Artie DeCheser Jenny's Brother
- Fred G. Smith Conroy's Lieutenant
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Manny Jacobs
Moore
- Charles Fields Price (as Charlie Fields)
- Eric Hsiao Saito
- Heather Rose Dominic Flirting Kid
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Bruce Smolanoff
Flirting Kid
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John Doumanian
Cabbie
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Tom Tarpey
Injection Doctor
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Roger Caine
FBI (as Alec Massey)
- Edward D. Murphy FBI
- Joan Harris Barbara Collins - TV Reporter
- Ken Chapin Command
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Peter McRobbie
Electronics
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Warren Keith
Computer
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Bruce Jarchow
Interrogator
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Stephen Markle
Interrogator
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Al Cerullo
Helicopter Pilot
- Michael Telesco Day Security Receptionist
- Richard Caselnova SWAT
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Frank Ferrara Sr.
SWAT
- Jimmie Ray Weeks SWAT
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Dan Butler
SWAT
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Steve Zettler
SWAT
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Debbie Gibson
Background (uncredited)