When DC Lennox is accused of planting evidence in an armed robbery case, DCI Meadows is determined to charge the suspect's accomplice, Phil Brown. Unfortunately, Brown claims to have been an informant for DS Don Beech, which makes Supt. Chandler determined to drop the case. When an old friend of Meadows' reveals that George Stubbs had previously bribed Chandler's DS at Park Rise, Meadows realises he has some ammunition against Chandler. Meanwhile Sgt. Boyden and PC Hagen help PC Roz Clarke recover her ASP when it is stolen while pursuing a robbery suspect.