Clare McMahon

The lives of two half-sisters and their drawing master get caught up in a deadly conspiracy revolving around a mentally ill woman dressed all in white.

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.