 The story alternates between the twisting back alleyways of Dickensian London and the cloistered gloom of a Gothic mansion in 1862.Since she was orphaned, Sue Trinder (Sally Hawkins) has been brought up amongst thieves and charlatans.She has been protected and cared for by Mrs Sucksby (Imelda Staunton) and taught to become a fingersmith (a pickpocket).