Getting ready for book 2 of the series!

This is a facebook posting from the other day: Driving home from work today, listening to my favorite music, a new title for the second novel in my adventure series hit me. I was so surprised as it came seconds after thinking I need a new title, then considered the story. Amazing what the right song can do for you! That and having a bad sinus headache finally letting up after, well, seems like forever. It put a plug in my creative juices;) In the story the main character, Bill, finds out his cousin, a boy who gets int...o all kinds of trouble and gave him a lot of grief during the last visit, will be sent to live with them. His parents don't see the problem for Bill as he has complained so often of being lonely as an only child. His cousin is one, as well, but the two don't see eye to eye with Bill resenting the change to his family and the problems his cousin causes. Things aren't better from Donnie's perspective. He feels unwanted everywhere and is hiding something, something that scares him. Title? What else could it be but . . . ONLY CHILD. Thoughts?