Who is Mr B? In Shadow World: Stolen Years, a DNA match reopens a 20 year old rape case that should have been solved years earlier.

As police investigate the new suspect, Andrew Malkinson begins to reckon with the damage of a wrongful conviction and whether recovery after so many years in prison, is possible. Shadow World: Gripping stories from the shadows - BBC investigations from across the UK.

Presenter and Producer: Jemma Gander Series Producer and Editor: Fran Robertson Assistant Editor: Christopher Whyte Composer: Sholto Sound design and mix: Chris Maclean Executive Producer for Goldhawk: Kate Holland Commissioning executive: Tracy Williams Commissioning editor: Dan Clarke

A Two Step Films production in association with Goldhawk for Radio 4