Had Clint Eastwood accepted the lead role in M. Night Shyamalan's Signs, that would have marked his only true horror movie. Following the success of Shyamalan's The Sixth Sense and Unbreakable, the filmmaker was tipped to become the next Steven Spielberg – which the cover of Newsweek famously proclaimed in 2002. The filmmaker couldn't quite live up to such sky-high expectations, and M. Night Shyamalan's movie follow-ups like The Lady In The Water or The Happening left many disappointed. After backing away from blockbusters and crafting more intimate projects where he has creative control such as Knock At The Cabin, he got his mojo back.
https://screenrant.com/signs-movie-clint-eastwood-horror-rejected-m-night-shyamalan/