Murder Maps - Season 5 - Eps 5: Herbert Armstrong - Hay Poisoner
Herbert Rowse Armstrong went down in history as The Hay Poisoner. Convicted in 1922 of murdering his wife with arsenic, he was the first and only solicitor to be hanged in the UK. But was he guilty? Was he a cunning poisoner, or was he a grieving husband wrongly accused? Much of the evidence against Armstrong was circumstantial and the scientific testimony remains disputed. In this episode we examine both sides of the case and ask whether the British justice system made a terrible mistake.
About Murder Maps

Title: Murder Maps
First Air Date: 2015-09-08
Last Air Date: 2020-02-28
Status: Ended
Rating: 8.2/10 (from 10 votes)
Language: EN
Seasons: 5
Total Episodes: 26
Network: Histoire TV
Genres: Crime, Documentary
Production Companies: 3DD Productions
Synopsis
This drama-documentary series takes us back in time to the most shocking and surprising murder cases in London, England's history. Nicholas Day guides us into the world of the killer as we see how police ingenuity and early forensics helped bring them to justice.
Cast

Nicholas Day
Himself - Host