Renton relapses and has to undergo heroin withdrawal at his parents' dwelling, exactly where he encounters hallucinations of the useless newborn Dawn, the tv programme he is viewing, and the lecture delivered by his father. He visits a former drug dealer, Johnny Swan, who has had his leg amputated as a consequence of heroin use, and he visits Tommy, who is dying of AIDS. Rockville, MD: National Institute on Drug Abuse.