

Donald Fraser - Betty's would-be fiancee.

He was a barber, mistakenly killed by ABC. George Earlsfield - ABC's fourth victim at a cinema in Doncaster.She works in a rich household and has Alice as her only relative. Mary Drower - The niece of Alice and another Legion member.He sat only two seats away from George and realised that George had been murdered.

Although he was clearly the logical victim, ABC killed George instead.

She is dying of cancer and takes various drugs. Lady Charlotte Clarke - The widow of Carmichael.Sir Carmichael is a childless man with a cancer-stricken wife. Sir Carmichael Clarke - ABC's third victim, a rich old man in Churston.Milly is a girl and a plain looking one at that, two things that make her an eyesore in Betty's eyes. It is implied that she has feelings for Donald. She disapproves of Betty's ways but wishes well for her and Donald. Megan Barnard - Betty's elder, sensible and comparatively down to earth sister and later a member of the Legion.Elizabeth "Betty" Barnard - ABC's second victim, a young, flirtatious part-time waitress in Bexhill.He is more terrified of her and may not be the killer. Franz Ascher - Alice's alcoholic husband and a prime suspect of Alice's murder.Alice Ascher - ABC's first victim, an old woman running a tobacco shop in Andover.He fought in the war, and received a blow on head, making him prone to blackouts and severe headaches. Alexander Bonaparte Cust - A travelling salesman with a pompous name.He kills his victims in alphabetical order and leaves an ABC railway guide depicting the scene of crime as his calling card. ABC - An unknown cold-blooded serial killer and Poirot's nemesis in this novel.
