Caddo Lake is one of those places in the world where the line between reality and myth is blurred. It is on the Texas-Louisiana border and sits on 25,400 acres of wetland. It is shrouded in mystery.

Caddo Lake is based on an original idea, though it draws from a real place. Shyamalan produces through his Blinding Edge Pictures production company, which has a multi-year, first-look deal with ...