Doctor David Beck receives an e-mail from unknown author. On attached video he can see his wife, who was abducted 8 years ago.
In 19th century Boston, series of brutal murders shock the society. Members of the Dante Club begin to notice parallels between those murders and the text they are working on.
One of the most famous detective novels - Belgian detective Hercule Poirot embarks on Orient Express train and soon has to make use of his skills to solve another mystery when one of the passengers is killed in his compartment.
When night train from Marseille arrives to Paris a young woman is found dead on board. Paris detectives begin the investigation.