by Cliff McNish (2006)
Book One of the Silver Sequence
The first two chapters of this book were very impressive, original and thrilling, especially for a YA fantasy. Overall the book doesn't finish as strong as the opening, it gets a bit over dramatic and confusing -- narrator switches, too many narrator self-questions (Why did I..., What should I...), and proportion issues (just how big is the "angel"???) but I'm probably being over critical.
Children start to change, gaining X-men like powers and gathering in a city dump. These aren't cool Animorph changes, there's a lot of pain and confusion and the threat of something unknown yet dangerous coming, but between the invasion situation and the children's talents I'm actually looking forward to reading the next book in the trilogy (usually I'm "One and Done").