Yes, everyone has come to this realization!
Among the cases Poirot solved, the most famous, and the one that readers enjoyed the most—
is "Murder on the Orient Express"!
In "Murder on the Orient Express", Poirot chose to let the murderer go.
Because the law could not punish the murderer who was beyond its reach, a group of people took up the butcher's knife and killed the murderer using a stunning collective crime methodology.
Fight violence with violence!
After uncovering the truth, Poirot hesitated for a long time and eventually decided not to turn this group in.
Poirot's handling of the case at the time caused controversy.
However, in "Curtain", there is another murderer who can't be punished by law.
This murderer exploited other people's psychological weaknesses to instigate them to kill, while he stood far away, watching.
A real outlaw!
He even incited Poirot's good friend Hastings to kill!
If it wasn't for Poirot's perception, Hastings would've become a murderer.
