Movie · 1965
Is I Saw What You Did based on a book?
Quick answer
Yes. I Saw What You Did is based on the book Out of the Dark by Ursula Curtiss (1964).
The movie was released in 1965.
The book behind I Saw What You Did
Common questions
Is I Saw What You Did based on a book?
Yes. I Saw What You Did is based on the book Out of the Dark by Ursula Curtiss (1964).
Who wrote the book I Saw What You Did is based on?
Out of the Dark was written by Ursula Curtiss and first published in 1964.
Should I read the book before watching?
If you like knowing the full story and characters first, read Out of the Dark before you watch. Adaptations often change or cut plotlines, so the book is a different experience even if you've seen the movie.