<p> Take Finn. He may be the burping champion of the universe. He may be the demon farter of the planet—capable of mind-boggling impressions (a hissing cat, a creaking door in a haunted house, a boiling egg). Or not. </p> <p> Take Danny. <i>He</i> may be the burping champion of the universe. <i>He</i> may be the demon farter of the planet—capable of mind-boggling impressions (a hissing cat, a creaking door in a haunted house, a boiling egg). Or not. </p> <p> Danny and Finn. Identical twins. Best friends. Big brothers to Angela. Playing with Donut the dog. Sons of Mum and Dad. Living together in a house on Holt Street. Happy. </p> <p> All of that is about to change. </p>