Follow the mystery as Marcus and his friends face their spookiest case yet in The Goblin's Revenge. This is the sixth thrilling instalment in the bestselling series by Marcus Rashford MBE, packed with mischief and mayhem. When a mischievous goblin begins targeting unkind students at Rutherford School, cryptic warnings appear and chaos spreads fast, even the Breakfast Club Investigators aren't safe from trouble. With the annual science competition hanging in the balance, can Marcus and his crew catch the culprit before pandemonium takes over? Bursting with vibrant illustrations and inspired by Marcus's own childhood adventures, this page-turner is ideal for young readers aged 8 and up who love mystery, humour, and a touch of magic.