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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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Episode 1
Fri, Feb 1, 201959 mins
In 1933, retired detective Hercule Poirot starts to receive threatening letters signed "ABC". When he informs Scotland Yard, they ignore his fears, and soon enough, a series of killings begins.
