Highly sought-after cook Kat Holloway takes a position in a Mayfair mansion and soon finds herself immersed in the odd household of Lord Rankin. Kat is fine with the family's eccentricities as long as they stay away from her kitchen, but trouble finds its way below stairs when her assistant is murdered. Afraid for her life, Kat turns to the mysterious Daniel McAdam for help. Daniel takes a position in the house as a footman and stand-in valet so that he can investigate covertly, but Kat cooks up a suspect list of her own. Together, they uncover crime in places low and high—including a plot that may threaten even Queen Victoria herself.