The Young Poisoner's Handbook(1995)
OVERVIEW
Graham Young is a teenage misfit living in suburban London in the 1960s. He hates his stepmother but loves chemistry, and the two impulses unite in a wicked plot to slowly poison her. After she dies, he's found guilty and sent to a psychiatric hospital, where an idealistic doctor thinks he can be cured.
TAGLINE:
Meet Graham. He's not your ordinary teenager.