I Know Who Killed Me Trivia
- Was not screened for critics.
- The original ending was cut after test audiences found it "too predictable".
- This is the third time Lindsay Lohan played two characters in one film. Her first time was as Hallie Parker and Annie James in The Parent Trap where she played twins and her second time was in Freaky Friday where she played Anna Coleman and Tess Coleman, whose body were swapped after an unfortunate Chinese curse.
- Lindsay Lohan's DUI arrest in late July 2007 prevented her from doing promotion for this movie.
- Holds the record for most Razzie Award "wins" by one film in a single year, with eight awards including Worst Picture of 2007. The record was previously held by Showgirls and Battlefield Earth: A Saga of the Year 3000, with seven awards apiece.
- Lindsay Lohan actually took pole-dancing lessons to prepare for her role as a stripper.