Revealing mistake: Carlene makes Joanna a cup of coffee in the common room after finding her drunk in the toilet. Joanna refuses to drink it and drops the cup, breaking it - it's obvious that there was never any coffee in the cup.
Grange Hill (1978)
1 mistake in Episode #20.18 - chronological order
Starring: Gwyneth Powell, Lee Cornes, Sally Geoghegan, Stuart Organ
Genres: Family
Vince: Where are you going?
Hollo: Nowhere.
Vince: Can I come?
Hollo: If you want to.
Trivia: Future supermodel Naomi Campbell appears throughout series 5 as an uncredited extra.