Her books are always being adapted in some way (case in point: Kenneth Branagh's new version of Murder On The Orient Express), but Agatha Christie's own life story is eminently suited to biopics and other films. Sony is counting on that, and wants Alicia Vikander to play Christie in a movie named for her.
The studio's take on Christie's life would see her eschewing a quiet time as a wife during her younger years, instead choosing to spend time with contemporaries such as Winston Churchill and Sir Arthur Conan Doyle.
Vikander is only considering the role at this time, but there's some added impetus to get the movie going, as Paramount has its own take – simply known as Agatha right now – that has been been bubbling away for a few years. When we last heard about it, the project had Easy A's Will Gluck attached to direct a film about the time the legendary mystery writer went missing for 10 days in 1926. No mention is made of the director in The Hollywood Reporter's check-in with the film, but the trade mag does mention that Emma Stone is top of the wish list to play the young Christie, so perhaps his influence is still being felt.
Before anything can really happen, however, there's the matter of approval from the Christie estate – indeed, the Orient Express team went through seven years of legal negotiation before the Branagh version could even be considered. So whichever project makes it to the post first will likely be the one to win the stamp of approval from the Christie family.