Collection of documentaries that examine the crimes of three of Scotland's most notorious murderers. 'Peter Manuel - The End of Evil?' sheds light on the man nicknamed 'The Beast of Birkenshaw', who was hanged in Barlinnie Prison in 1958 after being convicted of seven murders. 'Peter Tobin - Portrait of a Serial Killer' looks at the story of the man whose 2006 conviction for murder led many to speculate on the past crimes he may have committed. Finally, 'In Search of Bible John' looks at the unsolved case of three murders in 1960s Glasgow that were said to have been committed by a single man, 'Bible John'.