Book excerpt: Sam has known his sister Jessica all his life. Tonight is the first time they're going to meet. Sam Waver has always been a loner- bullied, struggling at school, with parents who have very little time for him. The one person he has always been able to rely on is his beloved older sibling - but when they announce that they are transitioning, Sam's life is thrown upside down. He's convinced nothing will ever be the same again - but as Sam is about to discover, nothing is more constant than love.