The primary source consists of extensive excerpts from Agatha Christie’s novel, Murder in Mesopotamia, chronicling the experience of Nurse Amy Leatheran at an archaeological site in Iraq. Leatheran is hired to care for the highly nervous Mrs. Leidner, who fears her supposedly deceased spy husband is sending her anonymous death threats. When Mrs. Leidner is brutally murdered, Hercule Poirot arrives to investigate the isolated group of suspects and the tense dynamics within the expedition staff. The investigation reveals a network of secrets and leads to a second poisoning, ultimately exposing Dr. Leidner, the seemingly devoted husband, as the killer who struck from the roof above his wife's window. Supplementary sources confirm the origin of the material in the Agatha Christie canon and provide advertising copy for other mysteries. These short summaries highlight the consistency of the celebrated Belgian detective in solving intricate and seemingly impossible cases throughout his long career.