This is the story of George Joseph Smith, a notorious serial bigamist who used his charm and charisma to marry and abandon multiple women in the early 20th century. Smith's victims were mostly poor and vulnerable women who were easily taken in by his lies
From Wikipedia
George Joseph Smith was an English serial killer and bigamist who was convicted and subsequently hanged for the murders of three women in 1915. The case became known as the Brides in the Bath Murders. As well as being widely reported in the media, it was significant in the history of forensic pathology and detection. It was also one of the first cases in which striking similarities between connected crimes were used to prove guilt, a technique used in subsequent prosecutions.