Acid house

It's a pretty extraordinary story, and no mistake: how 60 per cent of the global - yes, global - supply of LSD was once manufactured in the basement of a rural Welsh mansion, before Operation Julie, involving 800 police officers from 11 different police forces, shut it down. Little wonder that it's been the subject of books, a TV drama, an audio play and a radio documentary.

Here, one of those behind the latter, Carolyn Hitt, tells the tale of highly educated, loveable rogues who believed fervently in the positive, mind-expanding powers of acid - and the police officers who went undercover and worked tirelessly to catch them.

(Thanks to Simon for the link.)