Don't Look Behind You — Lois Duncan

If you had the perfect life, would you be able to walk away forever?

April has no choice.

It's senior year, and April has everything -- great friends, a handsome boyfriend, and a shot at the state tennis championships. Until she learns that her family must disappear info the Federal Witness Security Program to save their lives. There can be no explanations, no good-byes. And no going back. Can April leave behind her perfect life to become somebody else?