The outback's a great place to disappear: lots of country and no one around. Plenty of space for someone to hide. Or to hide a body.

When wiry youngster Mick Taylor starts as a jackaroo at a remote Western Australian sheep station, he tries to keep his head down among the rough company of the farmhands. But he can't keep the devils inside him hidden for long.

Mick's surprised to discover he's not the only one with the killer impulse. Is Cutter, the station's surly shooter, on to him? And do the rough cops following the trail of the dead have their own agenda, outside the law?

In the first of a series of Wolf Creek companion novels, the cult film's writer and director Greg McLean and horror writer Aaron Sterns take us back to the beginning, when Mick was a scrawny boy, the only witness to the grisly death of his little sister. Origin provides an unforgettably bloody answer to the question of nature vs nurture. What made Mick Taylor Australian horror's most terrifying psycho killer?