The life of a killer

1948: Robert Francis Mone is born. Grows up with parents and two sisters in Dundee.

• 1964: Mone is expelled from St John’s High School by the Marist Brothers.

• 1966: He joins the army and serves with the Gordon Highlanders in Germany.

• 1967: Nanette Hanson moves to Dundee from Yorkshire with her husband Guy and begins work at St John’s. Mone carries out his attack at his old school and Mrs Hanson is killed.

• 1968: Mone diagnosed as schizophrenic and deemed not fit to plead at trial, declared insane and sent to the State Hospital at Carstairs.

1970: Thomas McCulloch shoots a hotel chef at Erskine Bridge and is sent to Carstairs, where he meets Mone.

• 1976: Mone and McCulloch break out of Carstairs and embark on killing spree which leaves nurse Neil McLellan, 46, patient Iain Simpson, 40, and policeman George Taylor, 27, dead.

• 1977: Mone admits to killing PC Taylor. McCulloch pleads guilty to killing Mr McLellan and Mr Simpson. Lord Dunpark hands down Scotland’s first “natural life” sentences to the pair.

• 1979: Mone’s father, Robert Christopher “Sonny” Mone, murders three women after boasting he wanted to be more famous than his son and McCulloch. He tied up, strangled and killed Jane Simpson, 70, and friends Catherine Millar, 29, and Agnes Robertson Waugh, 78.

• 1981: Mone Jr stages a rooftop jail protest at Perth.

• 1983: Sonny Mone is stabbed to death by a fellow inmate in Aberdeen’s Craiginches Prison.

• 2002: Robert Mone uses human rights law to get his sentence cut to 25 years.

• 2007: Mone sparks outrage with a day trip to Crieff.

• 2017: Mone remains behind bars.