The SIXth novel from the MacMillan Prize for Picture Book Illustration's winner Kate Pankhurst. The perfect book for 7-9 yr olds who love funny stories with quirky illustrations like DIARY OF A WIMPY KID, the DORK DIARIES and CLARICE BEAN.

Mariella Mystery (That's me!) - totally amazing girl detective, aged nine and a bit. Able to solve the most mysterious mysteries and perplexing problems, even before breakfast.

There's a catnapping epidemic in Puddleford! More moggies are going missing every day, and Mariella and the Mystery Girls are determined to discover what's going on. When trusty feline sidekick Watson becomes the latest pet to be lured away, the situation becomes truly desperate. Can Mariella uncover the truth... before it's too late?