This provocative and riveting four-part drama tells the story of Sugar (Romola Garai Atonement, Emma) an alluring, intelligent young prostitute who yearns for a better life away from the brothel she is attached to, run by the contemptible Mrs Castaway (Gillian Anderson Bleak House, The X Files).

However, things change for her when she meets wealthy businessman William Rackham (Chris O'Dowd The IT Crowd). Sugar is a thrilling antidote to William, who is saddled with a pious brother, Henry (Mark Gatiss Sherlock, Doctor Who), and fragile wife, Agnes (Amanda Hale Any Human Heart, Bright Star) who regularly endures visits from the invasive physician Doctor Curlew (Richard E Grant Gosford Park, Withnail & I).

William ensconces Sugar as his mistress and she soon grows accustomed to her new life. Yet unbeknownst to William, Sugar begins to hatch a plan which sets a series of events in motion that will change their lives forever...

SPECIAL FEATURES:

• BBC Points of View behind-the-scenes interviews with Romola Garai and Chris O'Dowd.
• In depth interviews with key production crew members
• Deleted scenes