Shocking twists, suspenseful music, and unbearable anticipation are trademarks of mystery movies, keeping you on the edge of your seat wondering "whodunnit?"
And while movies love toying with the audiences' emotions (and we love them for it!), the real mystery is how filmmakers could make such blatant mistakes.
In case you missed them, here are seven mystery-movie blunders, from classics like "North by Northwest" and "The Usual Suspects." As usual, all photos are courtesy of MovieMistakes.com.
Photo Courtesy of Everett Collection / MGM