London 1899. The Museum Detectives Daniel Wilson and Abigail Fenton have been contacted by the curator of the National Gallery. He is getting in touch at the request of the artist, Walter Sickert, famously suspected of being Jack the Ripper. The dead body of a young woman, who had been an artist's model, has been found at the back of the Gallery and Sickert has been arrested on suspicion of her murder. When a second similar murder occurs, Sickert is once again implicated. The murders are copycats of the original Ripper murders, but the details of those crimes were publicised so most people would know them. Sickert insists he is innocent, but who would want to frame the famous artist?