Postscript Summary

Four months after Poirot's death, Hastings receives a manuscript from Poirot. Poirot explains all of the clues and details of the cases to Hastings. He says that Norton is the one person that is connected to all of the cases. Although Norton is quiet, he is evil. He uses her persuasions to convince other people to commit the murders. In each case, he knew someone involved and Norton convinced them that the person they were murdering would be better off dead.

Poirot says Hastings accepts everything at face value. For example, Hastings thinks it is Judith Allerton is convincing to meet him London. Poirot points out that there is only one person that had the day off and was mad when she couldn't go and that was Nurse Craven.

Poirot admits the replacing Georges with Curtiss because Curtiss is much less intelligent than...