A Button Up Detective Agency Cozy Mystery #2. As Janika Jones settles into her new career as a private investigator – fully trained, of course – she is asked to take the part of a New York art collector’s assistant to investigate a picture in a London art gallery, where she has to obtain vital photographic evidence without being caught. The theft of a collection of wartime medals leads to a gruesome discovery. And being accused of poisoning an unwelcome visitor is just another event in Janika’s hectic life at the Button Up Detective Agency.