When Stuart's driver Trevor Jones and a female friend are badly beaten up, the detective sets out to link the attack to a mysterious drug dealer known only as the 'Postman'. Meanwhile, Nate and Ben answer a call to a disturbance at a cafe where a boy has had paint sprayed in his face. The assault has racial overtones and the discovery of narcotics at the scene provides a vital lead for the CID investigation. (thetvdb.com)