A high-speed cops and robbers adventure with heart and soul about a father and son taking on the villainous Mr Big - and winning! This riches-to-rags story will have you on the edge of your seat and howling with laughter! Bad Dad is a fast and furious, heart-warming story of a father and son on an adventure - and a thrilling mission to break an innocent man into prison! The new heart-warming and hilariously brilliant story from number one bestselling author David Walliams.