I Saw What You Did (1965)

35mm film, black and white, 1.85:1
mono (Westrex Recording System), English

An American horror film directed by William Castle.

Plot Summary

Teenagers Libby and Kit spend the evening making , telling their “victims” that “I saw what you did, and I know who you are.” Unfortunately, one of them is a murderous psychopath who ha just killed his wife and believes that the girls really are on to him.


Directed by: William Castle
© MCMLXV [1965] by Universal Pictures Company, Inc.
Universal presents
Produced by: William Castle
Associate Producer: Dona Holloway
Screenplay by: William McGivern
From a Novel by: Ursula Curtiss
Director of Photography: Joseph Biroc
Film Editor: Edwin H. Bryant
Music: Van Alexander
Sound: Waldon O. Watson, David H. Moriarty
Make-Up: Bud Westmore
Hair Stylist: Larry Germain
Art Directors: Alexander Golitzen, Walter M. Simonds
Filmed at Universal City

Andi Garrett (Libby)
Sarah Lane (Kit)
Joan Crawford (Amy Nelson)
John Ireland (Steve Marak)
Leif Erickson (Dave Mannering)
Sharyl Locke (Tess)
Patricia Breslin (Ellie Mannering)
John Archer (John Austin)
John Crawford (trooper)
Joyce Meadows (Judith Marak)

Alternative Titles

Am văzut ce ai făcut – Romania
Broma macabra – Colombia, Costa Rica, Mexico, Panama, Venezuela
De doder is onder ons – Belgium (Flemish)
Es geschah um 8 Uhr 30 – Austria, Germany, West Germany
Eu Vi que Foi Você – Brazil
I Saw What You Did and I Know Who You Are! – USA (DVD)
In Case of Emergency – working title
In Case of Murder – working title
Jugando con la muerte – Spain
Láttam, mit tettél és tudom, ki vagy! – Hungary
Gli occhi degli altri – Italy
Morderen tager telefonen – Denmark
Näin mitä teit – Finland
Ne Yaptığını Gördüm – Turkey
Out of the Dark – working title
Se eida pou tin skotoses – Greece
Signal till mördaren – Sweden
O Telefone Fatal – Portugal
Le tueur est parmi nous – Belgium (French)
Tuer n'est pas jouer – Belgium (French), Canada (French), France
Widziałam, co zrobiłeś – Poland
Я бачила, що ви зробили – Ukraine
Я видел, что ты делал – Soviet Union

I Saw What You Did (1988)

Extracts included in
78/52 (2017)
American Grindhouse (2010)
Coming Soon (1982)

See also
Lisa (1989)
Psycho (1960)



  • Classic Images no.210 (December 1992 pp.49-50 – illustrated interview with John Ireland (John Ireland in “I Saw What You Did” by Ray Nielsen)
  • The Daily Cinema no.9141 (12 November 1965) p.4
  • The Film Daily vol.126 no.93 (14 May 1965) p.6
  • Kine Weekly no.3032 (11 November 1965) p.19
  • Monthly Film Bulletin vol.32 no.383 (December 1965) p.184
  • Motion Picture Herald vol.233 no.11 (26 May 1965) p.291
  • The Hollywood Reporter vol.185 no.30 (12 May 1965) p.3
  • Variety 12 May 1965


  • Feature Films, 1960-1969: A Filmography of English-language and Major Foreign-language United States Releases by Harris M. Lentz III p.212
  • Horror and Science Fiction Films IV by Donald C. Willis p.246
  • Reference Guide to Fantastic Films by Walt Lee p.211
  • Step Right Up!… I'm Going to Scare the Pants Off America by William Castle pp.179-181