The seventh exciting installment in Enid Blyton’s Adventure series

Why did Bill have to bring the babyish Gustavus with them on holiday? Jack knows he’ll only be trouble. But when Gustavus is kidnapped, along with Philip, Dinah, and Lucy-Ann, Jack and Kiki the parrot bravely set out to rescue them, leading them to a faraway land and the discovery of a plot to kill the King.