He's also a loner, intolerant of red tape and insubordinate to his superiors. And he just happens to be the best detective in Scotland Yard's crack Flying Squad.

When Regan receives orders to co-operate with Lieutenant Ewing, over from America to trace a cop killer, Regan is pursuing his own case and ignores them. But he soon discovers that Ewing is as tough as he is - and a dangerous clash of personalities develops. As the two cases begin to merge into a sinister and violent network of IRA provos and murderers, the two men close in for the kill...