
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.
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Last updated 6/6/2026
Rows are episode numbers, columns are seasons. Every rated cell shows its numeric score.
Weighted episode-level summaries calculated from the configured ratings source.
Best episode
S1E4 Episode #1.4 (7.4)
Consistency score
97/100
Std dev 0.15
Rated episodes
4
2,166 total votes
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