The Secret Life of Walter Mitty poster: Ben Stiller stands on a shark (exclusive)

Ben Stiller's in a sticky situation on the new poster for ‘The Secret Life of Walter Mitty’, but this legendary fantasist might not REALLY be perching on a shark.

Check out our exclusive, eye-catching one-sheet below.

Stiller directs this modern day update of the classic James Thurber story, with the film hotly anticipated  since the stunning first trailer was released back in July.
 
Here’s the official plot synopsis:

“In his secret life, Walter Mitty (Ben Stiller) dreams big... really, really big. There's no challenge beyond his grasp, be it climbing a massive glacier or rescuing a senior citizen from an exploding building. When he's not daydreaming, the not-so-secret life of Walter Mitty is the opposite of his heroic alter-ego's; he's just an everyday guy facing imminent career downsizing, who's too timid to ask out his pretty co-worker (Kristen Wiig). But when Walter faces his ultimate real-world test, he springs into action on a global adventure exceeding anything even he could have dreamed of.”

'The Secret Life of Walter Mitty' is released in the UK on 26 December. Watch the trailer below.