8 More Movie Mistakes You Can Never Unsee

An awful lot of blood is shed throughout Michael Mann's gripping 1995 crime thriller Heat.

And if you ever wanted to know exactly how the visual of a character being violently gunned down is achieved during the making of this sort of bloody drama, then a blink-and-you'll-miss-it flaw in this particular flick has the answer for you.

As Robert De Niro's Neil McCauley closes in on William Fichtner's Roger Van Zant casually watching TV at home, focus on his leg in the wake of a few bullets being pumped into his torso by the professional thief.

There, you'll spot what appears to be a blood squib cord going up his pants as he tumbles over a table, with this practical effect – likely triggered by the person on the end of said cord – bursting some fake blood packets as the actor is pretend blasted during the sequence.

And just like that, you'll never be able to rewatch this shocking and rather brutal death without your eyes being drawn to that noticeable wire of fake death.