One small girl - one BIG adventure. When Max is sent to Istanbul to stay with her boring Great Aunt-Elodie, little does she expect to be plunged into a thrilling night-time adventure across Europe. And when the mysterious Heartbreak Diamond goes missing, Max must find her feet in a whirling world of would-be diamond smugglers, thieves and undercover detectives. Will she discover the real diamond thief before they reach their destination? Or does the answer lie closer to home... Perfect for fans of MG Leonard's ADVENTURES ON TRAINS and Robin Stevens' MURDER MOST UNLADYLIKE series. A wonderfully plotted mystery for junior sleuths to unravel. Gorgeous writing shining with wit and warmth.