Worlds Greatest Liar (9781847156730)

Dylan Malone, aka Beaky, has a habit for telling porkies – every time he opens his mouth, out pops a whopper… But then his long-suffering sister shoves him into the truth-telling machine at Madame Shirley’s Marvellous Emporium of Peculiarities. Now Beaky can't tell a lie – not even a teeny-weeny one – and a truth-telling Beaky is even worse...