As bombs fall on London, writer Agatha Christie decides it is time to kill off her most famous creation.

On an archaeological dig in Iraq, author Agatha Christie uncovers a series of murders.

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.