Set in England at the turn of the 20th century, Wallace's crime novel „The Daffodil Mystery" follows the mysterious circumstances under which shop owner Lyne was found dead in Hyde Park, murdered undoubtedly! The clues were numerous but contradictory... The murdered man is an unsavory character who is called on the carpet by the investigator he tries to hire to frame the girl Odette Rider. Detective Jack Tarling and his trusted Chinese assistant become involved in helping the police solve the murder while also trying to protect the girl from being arrested for the murder. Moreover, the happenings within the novel are intensified by the colorful set of characters, which are marked by their plausible façade and contribute to the novel's appeal.