Book excerpt: I'm Dan Hope and deep inside my head I keep a list of things I want to come true. For example, I want my sister, Ninja Grace, to go to university at the North Pole and only come back once a year. I want to help Sherlock Holmes solve his most daring mystery yet. And if it could be a zombie mystery, all the more exciting. I want my dog to stop eating the planets and throwing them up on the carpet. And finally, the biggest dream of all, I want my dad to love me.