Henry has to solve a series of thefts from lorries and gets unexpected help from private security firm Troubleshooters. Their accuracy is such that he is suspicious of how they came to know of the crimes and believes that there is a possible informer within police ranks feeding them information for a reward. Troubleshooters are due to play the police eleven in an important football match. Both teams boast an ex-professional, in the police team's case Kirk Flowerbridge, who has a murky past and a liking for the drink. Fisher tasks Henry with minding Kirk and keeping him sober for the match. In the process of helping Kirk,Henry gets to identify the informer.