Tegs' brother comes home, Mr. Bronson's car breaks down, Danny Kendall gets off to a bad start and Clarke's new paper round is beset with difficulties.
Justine meets Tegs's on-the-run brother, Vince saves Georgina with his "psychic powers" and Gonch explains his computerized Homework Service to Ziggy and Robbie.
Vince's psychic powers continue to amaze Trevor Cleaver. Subterfuge is used to get Calley to do Mauler's French homework and the police raid Tegs's house.
Chrissy is mugged on the way to school, and this prompts Miss Booth into suggesting self-defence classes. Danny starts on the swimming pool mosaic, but forgets his appointment with Mr. Tilly, about work experience.
Gonch tries to impress Mandy Freemont to get her help with the homework service - but "Les Diapositives de Bretagne" turns out not to be the musical gig he was expecting.
Mr. Bronson spoils Danny's work experience and Justine helps Tegs get his shirts clean. Trevor's got a lot of money on a horse - will "Lucky Shark" live up to the promise of his name?
Trevor's out to get Vince for his failed prediction, and Mauler wants to muscle in on Gonch's Sweepstake. When Mauler and Ted chase Gonch and Ziggy through the estate, there's a tragedy in store when they discover Mr. Bronson's missing car.
Who is hiding inside Grange Hill? Trevor has a skinful and has to be hidden away by Ziggy and Robbie. Mr Bronson, increasingly isolated and withdrawn, pulls out of the Isle of Wight trip.
Mr. Bronson changes his mind about the isle of Wight trip, Justine discovers where Tegs has been hiding, and Helen has her first day of work experience as an engineer.
Trevor's drinking gets him into a dangerous situation. At the barbecue, Calley goes cold on Robbie, and Mandy discovers the original reason that Gonch asked her out.