Ben Affleck and Rosamund Pike will play seemingly happy couple Nick and Amy Dunne, whose marriage is revealed to be more complex after Amy vanishes on their fifth wedding anniversary.
While both actors are the right 'type' for their characters, neither was widely predicted to be in the running - Emily Blunt and Charlize Theron were long rumoured for the role of Amy - and the announcements have divided fans of the novel.
When Digital Spy published our own wish-list of casting choices earlier this year, our picks included Theron, Blunt and Jessica Chastain for Amy, and Bradley Cooper, James Franco and Jon Hamm for Nick. But now we want to hear your thoughts.
If you're not a fan of the casting, let us know who you'd rather see as Nick and Amy in the comments below!