Mark "Scarface" Smith recalls a career of extremes, from colourful characters to senseless loss. There's the story of Chris Woods, who pretended to be a world-beating jockey and took punters for millions with his race-fixing scam, but came unstuck when he tried his con on a fellow crim. And there's one of the saddest cases he dealt with - the killing of trucker Bob Knight, a man simply doing his job who was hit by a stray bullet as "Saturday night gangsters" engaged in a reckless shootout.