- as Esther Albright / Leena Klammer
- as Tricia Albright
- as Allen Albright
- as Inspector Donnan
- as Gunnar Albright
- as Dr. Segar
- as Dr. Novotny (as Dave Brown)
- as Officer Leahy
- as Anna
- as Federica
- as Lobby Guard
- as Betsy
- as Mike
- as Karen
- as Dude 1
- as Girl 1 / Madison
- as Receptionist / Claire
- as Little Boy
- as Officer Kusnetsov
- as Flight Attendant
- as Society 1 / Olive
- as Society 2 / Gertrude
- as Esther Body Double
- as Esther Body Double
- as Orderly
- as Laughing Partier #1
- as Laughing Partier #2
- as Young Esther (uncredited)
- as Guard (uncredited)
- as The Handstand Man (uncredited)
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