凯茜·贝尔顿

　　在前四季中饰演威廉“公爵”威灵顿的斯图尔特·马丁将不会回归第五季。凯特·菲利普斯（曾出演《狼厅》、《王冠》）将回归饰演伊丽莎·斯卡雷特小姐，出演第五季的调查剧，该剧将更名为《斯嘉丽小姐》。

在新一季的《绯红小姐》和《公爵》中，伊丽莎接管了纳什父子公司的生意(并不是说他有儿子)，尽管有一些熟悉的来源提供帮助，但事情进展并不顺利。在工作之余，她和威廉的关系建立在一个即将到来的决定上，这个决定将影响他们俩的生活。

　　Eliza Scarlet与苏格兰场督察联手解决了19世纪伦敦的犯罪问题。在这个男人的世界中，她需要一个伴侣。苏格兰场的侦探督察William Wellington，也被称为“The Duke”：酒鬼，赌徒和花花公子。Eliza和Duke将联手解决1880伦敦最黑暗的犯罪。

　　Single-mother Sandra (Clare Dunne) escapes her abusive partner with her two young children, only to find herself trapped in temporary accommodation. After months of struggling, she draws inspiration from one of her daughter’s bedtime stories and hits upon the idea of self-building an affordable home. She finds an architect who provides her with plans and is offered land by Peggy (Harriet Walter), a woman she cleans for. Aido (Conleth Hill), a building contractor, appears willing to help too. But as her past rears its head, in the form of Gary (Ian Lloyd Anderson), her possessive ex, and as bureaucrats fight back against her independent spirit, will Sandra be able to rebuild her life from the ground up?