一名小镇医生发现，他所在社区的居民正被失去情感的外星复制体悄然替换。
Kevin McCarthy
Dr. Miles J. Bennell
Dana Wynter
Becky Driscoll
King Donovan
Jack Belicec
Carolyn Jones
Theodora 'Teddy' Belicec
Larry Gates
Dr. Dan 'Danny' Kauffman
Kenneth Patterson
Stanley Driscoll
Virginia Christine
Wilma Lentz
Jean Willes
Nurse Sally Withers
Ralph Dumke
Police Chief Nick Grivett
Guy Way
Officer Sam Janzek
Bobby Clark
Jimmy Grimaldi
Beatrice Maude
Grandma Grimaldi
Whit Bissell
Emergency Room Psychiatrist
Richard Deacon
Emergency Room Doctor (uncredited)
