Before he steps into the iconic shoes of Batman in the upcoming Batman v Superman: Dawn Of Justice movie, actor Ben Affleck will play a man who is suspected of murdering his wife. The latest Ben Affleck movie Gone Girl, is based on the bestselling novel by Gillian Flynn.

In this new trailer for the latest Ben Affleck movie Gone Girl, we see young love about to bloom between Affleck's character Nick, and beautiful Amy (played by Rosamund Pike).

But things start to get dark and we hear Amy's ominous voice over, "This man of mine may truly.. kill me." And the Gone Girl trailer cuts to the media frenzy that surrounds the disappearance of Amy, and Nick at the center of it all as the prime murder suspect.

Devoted fans of the bestselling book will have to wait until Gone Girl's release date of October 3 before they can find out if the film stays faithful to their belove dbook.

In an interview with Entertainment Weekly, it was hinted at that the book's author, Gillian Flynn, who also wrote the movie's script, had made major changes from the book's story, and had even created an brand new ending.

Director David Fincher (The Curious Case of Benjamin Button, The Social Network) revealed to the magazine that Affleck was taken aback by the new conclusion to the story.

"Ben was so shocked by it," he said "He would say, 'This is a whole new third act! She literally threw that third act out and started from scratch.'"

However, during a recent Reddit question-and-answer, the bestselling author downplayed any worries that fans might have about a new storyline.

"Those reports have been greatly exaggerated! Of course, the script has to be different from the book in some ways-you have to find a way to externalize all those internal thoughts and you have to do more with less room and you just don't have room for everything. But the mood, tone and spirit of the book are very much intact. I've been very involved in the film and loved it," Gillian Flynn assured the fans.