There were five now. The mugger, the sex offender, the wife-beater, the drug-dealer. And of course, Peter. Jason hadn't needed a gun to kill Peter.

Jason Ennis doesn't understand why the world is such a confusing place. Why it's so difficult to read between the lines, so hard to understand what people want, such a struggle to fit in. Not that he isn't trying as he works a dead-end job and chips away at a degree that's going nowhere.

But good things come to those who wait. Sometimes, when he least expects it, he gets a chance to make a real difference. To make the world a better place. By removing someone else from it. Someone who doesn't fit in with his standards of behaviour, someone who reminds him of how they scarred him as a child.

Scarred is not for the squeamish. A poignant debut about serial killers on the streets of Sydney, it explores the addictiveness of vengeance and the tragic mistakes made by the misguided.