Often considered to be the first real detective story, this is a skillful adaptation of Wilkie Collins' superb 19th century novel.

Sir Percival Glyde is being hounded for money by his old friend, the sinister Count Fosco, so his marriage to the heiress Laura Fairlie is for one reason only: her fortune.  As events unfold, Glyde's efforts to secure the money - and also to remove the threat to his reputation posed by the unfortunate Anne Catherick, who is physically identical to Laura - become more desperate and cruel. 

Combined with this tale of disturbing intrigue are elements of romance (as Laura turns for support to her drawing tutor, Walter Hartright) and comedy (provided by her hypochondriac uncle): the resulting mix is headily entertaining.