Mark Lindsay Chapman

Richard Armour

Susan Blakely

Layla

Lisa Blount

Cindy

Brion James

Alien Leader

Earl Boen

Sid

Geoffrey Lewis

Prof. Alan Jeffries

Catherine Mary Stewart

Angela Taylor

Nicole Eggert

Elyse Jeffries

Paul Brinegar

Pops

Barry Pearl

Eddie

Barbara Townsend

Celia Evans

Channing Chase

Susan Weiss

Glen Vernon

Henry Evans

Richard Partlow

FBI Agent #2

Biff Yeager

FBI Agent #1

Toni Attell

Patti

James R. Parkes

Policeman

Rodger LaRue

Man in Coat

Stanley Bennett Clay

Cammie

Greg Collins

Policeman

Lola Fisher

Nervous Lady

Robert Beaulieu

Nervous Man

Al Pugliese

Agent #2

Martin Clark

Coroner

John Durbin

Trucker

Jerry Boyd

Agent #1

Helen Anderson

Female Airline Agent

William Jackson

Airline Supervisor

Gary Burden

Bum

Julie Harris

Girl

Walter G. Zeri

Agent