Agatha and the Truth of Murder

England, 1926. An American journalist looks for mystery writer Agatha Christie when she suddenly disappears without explanation, leaving no trace.

In 1935, when his train is stopped by deep snow, detective Hercule Poirot is called on to solve a murder that occurred in his car the night before.

After freeing a young Bedouin girl from her unjust imprisonment in Jerusalem, an Australian adventuress, together with her devoted police detective friend, begins to unravel a decade-old mystery concerning priceless emeralds, an ancient curse and the disappearance of the girl's mother and massacre of her tribe.

In Acapulco, Hercule Poirot attends a dinner party in which one of the guests clutches his throat and suddenly dies. The causes seem to be natural until another party with most of the same guests produces another corpse.

Sherlock Holmes and Dr. Watson find themselves in 1890s London in this holiday special.