I Saw What You Did
- Tahun: 1965
- Negara: United States of America
- Genre: Thriller
- Studio: William Castle Productions, Universal Pictures
- Kata kunci: based on novel or book, slumber party, murder, neighbor, prank telephone call, hagsploitation
- Pengarah: William Castle
- Pelakon: Andi Garrett, Sara Lane, Joan Crawford, John Ireland, Leif Erickson, Sharyl Locke