Fresh from solving the gruesome murder of a British agent in the Canary Islands, mystery writer Agatha Christie receives a letter from a family who believe their late daughter met with foul play. Before Gertrude Bell overdosed on sleeping medication, she was a prominent archaeologist, recovering ancient treasures in the Middle East. Found near her body was a letter claiming that Bell was being followed. To complicate things further, Bell was competing with another archeologist, Mrs. Woolley, for the rights to artifacts of immense value.