Trivia: What is the highest-grossing horror film of all time?
Correct Answer: It
So why is this answer correct? : There’s just something about Pennywise the clown and his menacing grin that draws audiences in. The 2017 release of “It” — based on the classic Stephen King novel — is the highest-grossing horror film in American box office history, raking in more than $327 million. In second place with sales of around $293 million is the 1999 film “The Sixth Sense.”