 Doyle sinks to a new low - stealing light bulbs and selling them to a second-hand shop, and replacing the good ones with duds. In the storeroom, Tucker nags Alan about his smoking habit. Cathy s group gives an impressive trial performance to Justin and Andrew. Mr Thomas comes to the conclusion that the School s electrics are faulty, because so many bulbs are failing. When Doyle and his mates go to sell the bulbs, they find the transaction isn t as profitable as they hoped - but perhaps if they can also supply toilet rolls... The caretaker notices the smoky smells from Alan s illicit cigarettes and locks the storeroom. As a result, Alan uses his desk for an illicit drag, but is caught by Mr. Hopwood. Cathy observes Doyle stealing light bulbs, and asks Andrew Stanton to have a quiet word with Doyle.