Waters ventures into Charles Dickens territory for her third novel, set in Victorian England. Her triumph is to produce a deftly plotted thriller with two equally compelling heroines, orphans Sue Trinder and Maud Lilly. Manipulated by someone she knows only as Gentleman, Sue is sent to a country estate to work as Maud’s maid and help him woo the simple heiress. The plot twists — then again and again — until one girl is in a terrifying insane asylum and another held captive. An absorbing and elegant story that’s old-fashioned in the best way.