The not so cursed child: did Harry Potter mark the end of troubled young actors?

As we reach the 20th anniversary of the magical British blockbusters, the real magic lies in the way its young stars have stayed on the rails - unlike many before them

There are many magical things about the Harry Potter film series, which marks its 20th anniversary this month with a re-release of Harry Potter and the Philosopher's Stone. Perhaps the most miraculous one, though, is that its three stars - Daniel Radcliffe, Emma Watson and Rupert Grint - are still alive, apparently content, and not noticeably addicted to class A drugs.

Each continued acting, occasionally even starring in bona fide hits: Radcliffe in The Woman in Black; Watson, who is also a UN women goodwill ambassador, in Beauty and the Beast. Grint, star of the M Night Shyamalan series Servant, also became a father last year - his partner is another former child actor, Georgia Groome of Angus, Thongs and Perfect Snogging - and celebrated by joining Instagram. Even there, he has shown a characteristic level-headedness by posting a mere six times in 11 months.