Overview
1933. Hercule Poirot, older and greyer, receives letters threatening murder. The sender signs themselves only as “A.B.C.” When he takes the letters to the police looking for help, Hercule finds all his old friends have moved on. But soon there is a murder and the once-great detective must take matters into his own hands.
Trailer
Cast
John Malkovich
Hercule Poirot
Rupert Grint
Inspector Crome
Eamon Farren
Cust
Andrew Buchan
Franklin Clarke
Bronwyn James
Megan Barnard
Tara Fitzgerald
Lady Hermoine Clarke
Anya Chalotra
Lily Marbury
Freya Mavor
Thora Grey
Conrad McCroddan
Beautiful Young Man
Eve Austin
Betty Barnard
Suzanne Packer
Capstick
Jack Farthing
Donald Fraser
Shirley Henderson
Rose Marbury
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Keywords
based on novel or bookbelgiumworld war iserial killermysterious letter1930s
Seasons
Added: 5/14/2026Updated: 6/2/2026