After a senior Scottish lawyer is convicted on historic child abuse charges, BBC Disclosure speaks to his victims and explores how he hid his crimes for decades. Reporter Myles Bonnar also revisits a 30-year-old scandal that rocked the legal establishment. For the first time on camera, members of the police, press and judiciary look back on the so-called 'Magic Circle Affair' and its major players. We ask whether there was a dark circle of criminality operating beneath this scandal.