Back in the saddle and race riding again after weeks recuperating from a serious accident, champion jockey Harry Radcliffe reckons his life is back on course. That's before local gangster Jake Smith, newly released from gaol, makes contact. Knowing of Harry's success in finding out who killed his brother, Jake now wants him to discover who murdered his sister, Jo-Jo. Refusing to accept the official verdict of accidental death, Jake is prepared to use whatever violence necessary to uncover the truth. He's determined that somebody pays the price for his sister's death - and if Harry doesn't find out who's responsible, it'll be him.

Once again forced to turn detective, Harry is about to enter a world of greed, corruption and treachery in order to unmask a ruthless killer.