Three Pickled Herrings — Sally Gardner

At the Wings & Co. Fairy Detective Agency, Emily Vole and her friends are beginning to worry. It's been five months since their official opening, and they haven't had a single case! Then local landowner Sir Walter Cross dies in sudden and mysterious circumstances, and his case arrives right on their doorstep. And soon the detectives hear more baffling news: Mr. Rollo the tailor has mysteriously lost everything, and Pan Smith's wedding plans have been ruined the night before her big day. Now Wings & Co. has not one, but three pickled herrings to solve! Can they figure out who is stealing people's luck before things go too far?