The Blackthorn BranchThe Blackthorn Branch by Elen Caldecott is longlisted for the Carnegie Medal for Writing. Cassies older brother Byron has fallen in with the wrong crowd. Its soon clear these boys are wild, reckless, and not human at all. They are tylwyth teg Fair Folk, who tempt humans down into the dark places of the world. And Byron is tempted. When he goes missing, Cassie and her cousin, Sin, follow his trail to an old abandoned railway tunnel which goes down and