Hercule Poirot and A B C’s rivalry

The rivalry between Hercule Poirot and A B C is a contest over who can define the meaning of the murders: the sender presents them as a game played at Poirot’s expense, while Poirot insists that the apparent game conceals a motive that can be reasoned out. The printed challenges make the detective a public opponent and audience; his effort to understand the sender’s personality becomes a way to anticipate what the alphabetical pattern alone cannot explain.

The First Challenge

A B C’s first surviving challenge addresses Poirot directly and mocks his confidence in solving cases that the British police cannot. The sender invites him to test his cleverness against a supposedly difficult puzzle, then warns him to look out for Andover on the 21st of the month. The message is printed on thickish white notepaper, and the envelope is printed too. Its form gives the threat the appearance of a deliberate notice, while its wording frames the crime to come as a personal test of Poirot’s competence.

The relationship becomes more openly competitive after the Andover case. In a second printed letter, A B C calls the affair the sender’s “First game” and says that the fun is only beginning, directing Poirot’s attention to Bexhill-on-Sea and the 25th. Poirot’s companion reacts with alarm at the prospect of another crime; Poirot answers that the Andover affair was not isolated and recalls having said that it was the beginning. The exchange shows how the letters turn advance warning into a recurring contest: the sender announces a further move, while Poirot reads the announcement as evidence of an unfolding series.

From Taunt to Inquiry

At a discussion with the Assistant Commissioner, Dr Thompson, and Inspector Crome, Poirot refuses to accept the killer’s apparent explanation at face value. The letters make the murders seem to be committed for sport, but Poirot asks whether amusement alone would explain why the killer advertises them. In his reasoning, publicity is itself a clue: the sender wants to make a splash in the public eye and assert a personality. The challenge is therefore not only to identify a murderer but to infer what that person is trying to assert through the crimes.

Poirot tests several possible sources of that need for recognition. He wonders whether the killer’s personality has been suppressed in a way connected with the two victims selected so far; whether the challenge reflects direct personal hatred of Poirot, perhaps arising from an earlier defeat of which Poirot is unaware; or whether it expresses impersonal hostility toward a foreigner. He further asks what injury might have prompted such hostility. These are presented as open questions, not established answers. Their importance lies in Poirot’s method: he believes the apparently fantastic logic of the killer may still be coherent from the killer’s point of view, and that discovering it could indicate who is likely to be attacked next. Crome instead maintains that the victims are selected haphazardly, marking a disagreement over whether the pattern can be explained by personal motive.

The Contest Continues

A third printed message taunts Poirot for being less capable at criminal cases than he believes, suggests he may be past his prime, and calls the coming case an easy one. It names Churston and the 30th, then sarcastically encourages Poirot to do something about it, complaining that having everything his own way is dull. The letter makes the sender’s performance more pointed: A B C claims superiority, but also presents the crimes as a game whose interest depends on Poirot’s participation.

That mixture of mockery and invitation sharpens the rivalry’s central tension. The sender appears to enjoy both the murders and the public challenge, yet Poirot treats the boasting as material to examine rather than accepting its stated motive as the whole truth. The letters’ repeated destinations and dates advertise a pattern; Poirot’s questions seek the personal logic beneath it. In this way, the correspondence turns a sequence of warnings into a duel of interpretation, with the next threatened crime carrying both immediate stakes and the promise of another test between the two opponents.