M. Night Shyamalan’s 'The Sixth Sense' was a sleeper hit that became the second highest-grossing film of 1999 ($672 million). Its success was unique because it relied on a 'twist' ending that practically demanded a second viewing. Once audiences knew the secret, they returned to theaters to see the clues they missed—such as the color red being used to indicate the presence of the supernatural. This created a 'word-of-mouth' blockbuster phenomenon. It proved that in the age of big-budget action, a small, suspenseful, character-driven story could reach blockbuster heights if it gave the audience something to talk about long after the credits rolled.