Sir Richard Stewart, chairman of the horse racing authority, wants Sid Halley to look into some suspicious race results, but Sid gave up the investigating business six years ago and he thought nothing could make him go back He thought wrong The following day, Sir Richard is found dead and Sid receives a threatening call from a man with an Irish accent The man insists that Sid Halley should investigate the alleged race-fixing and it is only when his six-year-old daughter goes missing that Sid realises that he may pay the ultimate price for his refusal