Miss Mary-Kate Martin travels the globe with her family helping solve monstrous problems in this fun fantasy adventure from the multi-award-winning author of Dragon Skin and Lenny's Book of Everything. 'Funny and fast-paced. A thrilling combination of courage, kindness and a cleverness of the heart.' Anna Fienberg, bestselling co-author of Tashi Mary-Kate and her granny are going to stay at a very quiet...