10 Movies That Left Behind Crazy Things On Film Sets

10. A Fake Bloodstain Wasn't Cleaned Off An Apartment's Floorboards - Heat

The crew of Michael Mann's iconic crime epic Heat left behind a rather grim surprise for the future owners of an apartment which was used as the home of criminal Trejo (Danny Trejo).

Trejo is killed in the third act of the movie, bleeding to death on the floor of his apartment after being tortured, and when more recent owners of the abode watched Heat after learning it had been filmed there, they decided to pull up the very same carpet where the death scene was shot.

To their surprise - and hopefully perverse amusement rather than abject terror - they discovered the still-present residue of the fake blood, which had soaked through from the carpet to the floorboards underneath.

Despite Heat's mighty $60 million dollar budget, the film's cleanup crew apparently skimped on the finer details.