Hub Hill Primary School is in the grip of a crime wave. Wesley Booth is a Super Sleuth, which is like a detective only awesomer, and this is his biggest (and first) real case. It's not easy when he has to deal with an arch enemy (new-girl-at-school Cassidy Strong), traitorous friends and incompetent assistants, prison warden parents, a delusional big brother, a client who wants to snap him in half like a stick, and over eighty-one million suspects. But he has to work out who the Heister is before his detective equipment gets confiscated and he is grounded forever.