1408 has four alternate endings, all of which bring a unique spin to Mike Enslin's storyline — here's a breakdown of all four endings and what they mean for Mike. Based on a Stephen King short story, 1408 focuses on horror author Mike Enslin, who visits haunted places, hoping to capture the paranormal and write a book about them. To his dismay, none of the so-called haunted rentals give him concrete proof of the existence of the supernatural. However, one day, Mike receives a postcard that warns him not to visit The Dolphin's room no. 1408.

https://screenrant.com/1408-ending-explained-all-versions/