When 18 year-old Morné Harmse walked into his Krugersdorp high school, armed with a samurai sword on a Monday in 2008, he had one mission – to commit a massacre. Inspired by the Columbine high school killings, his fantasy to make people "take notice" had been brewing for more than a year. By the time his sword-slashing spree had ended, 16-year-old Jacques Pretorius was dead and three others were brutally injured.

In the aftermath of what was described as “the most barbaric act of schoolboy violence in South African history” the country was left reeling. How does an ordinary boy from a "normal" family become a brutal killer overnight? Was Morné under the influence of a satanic cult? A protégée of mastermind Devilsdorp killer, Cecilia Steyn? Did his obsession with heavy metal band Slipknot drive him over the edge? Now, 14 years later, Morné Harmse is out on controversial parole.Written in mesmerising detail, Samurai Sword Murder finally puts together the pieces of this brutal tragedy.