![The Longest Nite](https://image.tmdb.org/t/p/w185/fGceZ7I1IibzaWHngbrsuOf75g5.jpg)
England, December 1926. Although her personal life is in tatters, the famous writer Agatha Christie decides to leave everything behind to help unravel an unsolved murder committed on a train six years ago, unable to imagine the disproportionate consequences that such a selfless act will cause.