#18 – Peter Manuel
Peter Manual was an American-born Scottish serial murderer. Between 1956 and 1958, Manuel killed more than 15 people but was only found guilty of murdering 9 people. The Scottish police weren’t able to prove his guilt until they found some banknotes with him which were proven to be stolen from his victims.
Manuel was put on capital punishment. He was hanged at the Barlinnie Prison in Glasgow in July 1958. Manuel was one of the last prison inmates in Scotland that were executed.