The First Day of the Edinburgh Festival - Narrated by Renton. Mark initially makes an attempt to come off heroin by acquiring a bare room and all the things he will require when coming down. When withdrawal begins to set in, however, he resolves to get another hit to ease the decline. Unable to find any heroin, he acquires opium suppositories which, after a heavy bout of diarrhoea, he must recover from a public lavatory (depicted in a notable scene recreated for the film, "The Worst Toilet in Scotland") showing the extent to which a junkie will go for a hit (punctuated by the fact that he had to put up with Mikey Forrester to get them, a dealer he loathes).