 It s time for the technical rehearsal of the school musical. Gonch bugs the staff room one more time, to find out if Mr. Bronson knows he and Hollo took his toupee. Mr. Bronson turns up in a backup wig, which has a different colour. Calley and Ronnie wash the stolen wig in home economics, but tell Gonch that it has shrunk. It s time for the French students to go home, but it seems Roland isn t quite ready to lose Fabienne, and he s found on the ferry. On retrieving the Walkman, Mr. Smart intercepts Gonch, and confiscates it. Gonch puts the supposedly shrunk wig on "Henry" in the Staff Room, but they have to get out quickly. Later, Mr. Smart pulls Gonch out of his lesson - he is under suspicion of doing the thefts, and the whole truth of the bugging is revealed. Playing back the tape reveals the voices of the real thieves - Gripper and his sister, and Denny Rees. It seems that stealing wasn t their only crime though - the set for the musical has been completely destroyed!