Behind the scenes on the set of Edwin Drood

Charles Dickens died before finishing his novel, The Mystery of Edwin Drood. But a BBC adaption, which begins on Tuesday, aims to completes the story.

It's a psychological thriller about a provincial choirmaster's obsession with a 17-year-old girl and the lengths he will go to to attain her.

David Sillito has been behind the scenes of the new production.