Clarke’s identity revealed

The revelation that Franklin Clarke is A B C resolves the apparent series of alphabetically arranged murders as a calculated disguise for the killing of his brother, Sir Carmichael Clarke. Hercule Poirot identifies the inheritance motive, explains how Alexander Bonaparte Cust was made to look like the killer, and assembles the physical and eyewitness evidence against Franklin. The disclosure turns a pattern designed to attract attention away from a single crime into the means by which its author is caught.

The pattern concealing the motive

Poirot’s explanation begins with the danger of treating the murders as one connected spectacle. He reasons that an individual killing attracts less notice when it is absorbed into a series of apparently related crimes. The alphabetical pattern and the advance warnings have therefore done more than advertise a killer: they have directed attention toward a supposed serial murderer and away from a suspect prominent in one particular crime.

The decisive motive lies in the inheritance following Sir Carmichael Clarke’s death. His wife, who is dying, has a life interest in his wealth; after her, the money passes to his brother Franklin. Poirot treats this succession as the concrete answer to the police question of who benefits from the death. The series, on this reading, is not the murderer’s real objective but an elaborate screen for a crime with a direct financial beneficiary.

From suspected pattern to identified person

Poirot says he had formed an image of the murderer before matching it to a known person. The criminal he sought was clever, resourceful, daring, and willing to gamble, with an attractive manner toward women and a boyish cast of mind. These traits, in Poirot’s account, were not a vague portrait detached from the case: they helped him distinguish the actual planner from the conspicuous figure the letters had led the public to imagine.

Franklin’s character and circumstances bring the clues together. Poirot connects the adventurous, roving life and ease with women to the supposed killer’s profile, while the methodical mind appears in the list Franklin made and checked against the A B C headings. Poirot also points to Franklin’s boyishness, which Lady Clarke had described, and to his taste in fiction: a copy of The Railway Children by E. Nesbit was in the library. The force of the identification comes from the convergence of motive and several features of Franklin’s conduct and character, not from the alphabet alone.

Cust as the false suspect

The apparent case against Cust is part of Franklin’s design. Poirot distinguishes the real murderer from a second, pseudo-murderer: Cust, who is suggestible, vacillating, and convinced that he himself committed the crimes. Cust’s belief in his guilt does not confirm it. Poirot says that he recognized both that Cust thought himself responsible and that he lacked the nerve, daring, and planning ability required to carry out the murders.

In Poirot’s reconstruction, Franklin needed more than a series of crimes to divert attention from the murder of his brother; he also needed a person who could be made to appear to embody the imagined serial killer. Poirot traces the idea to Franklin’s chance encounter with Cust in a city coffee house, at a time when Franklin was considering ways to murder Sir Carmichael. The contrast between the calculating author and the suggestible decoy is the key to understanding why Cust’s apparent guilt could mislead without making him the perpetrator.

Evidence and confrontation

Franklin rejects Poirot’s explanation as absurd, but Poirot answers that the evidence becomes obtainable once suspicion has settled on him. He identifies the stick used in the Andover and Churston murders: an ordinary stick whose thick knob concealed a section of wood removed to make room for melted lead. The weapon found hidden in a cupboard at Combeside ties the supposedly separate crimes to Franklin.

Other evidence places Franklin where his account should not have placed him. Two witnesses selected his photograph from a group of six after seeing him leave the cinema while he was supposed to be at the Doncaster racecourse. Milly Higley and a girl from the Scarlet Runner Roadhouse identified him in connection with the evening he took Betty Barnard to dine there. Most damagingly, Poirot reports Franklin’s fingerprint on Cust’s typewriter, an object Franklin could not plausibly have handled if he were innocent. The evidence joins a concealed weapon, challenged whereabouts, witness identifications, and a physical trace on the instrument associated with the letters.

Franklin accepts defeat with the phrase, “Rouge, impair, manque!—you win, M. Poirot!” But his admission that the attempt had been worth making is followed by an attempt to escape the consequences by killing himself. He produces a small automatic and points it at his head; the hammer clicks without firing. Poirot reveals that a friend serving as his new manservant, an expert sneak thief, had removed the pistol, unloaded it, and returned it without Franklin noticing.

Capture and significance

With the attempted suicide frustrated, two detectives from Scotland Yard emerge from the next room, and Inspector Crome warns Franklin that anything he says may be used as evidence. Poirot rejects Franklin’s claim to a sporting or respectable conception of crime, emphasizing that the elaborate plan depended on concealment, misdirection, and the manipulation of Cust. The encounter thus ends not in an escape but in arrest, with the detective’s preparation closing off the last possibility Franklin tries to seize.

The revelation changes the meaning of the whole series. Publicity, warnings, and amateur detection had been directed toward catching a killer who seemed to follow the alphabet; Poirot’s solution shows that the spectacle served Franklin by making the individual murder harder to see. Cust’s apparent guilt was another instrument of that misdirection. The final identification restores the distinction the plan had blurred: the man who designed the crimes and the man who believed himself guilty were not the same person.