From a Distant Star — Karen McQuestion

Seventeen-year-old Emma was the only one who hadn't given up on her boyfriend, Lucas. Everyone else -- his family, his friends, his doctors -- was convinced that any moment could be his last. So when Lucas miraculously returns from the brink of death, Emma thinks her prayers have been answered.

As the surprised town rejoices, Emma begins to question whether Lucas is the same boy she's always known. When she finds an unidentifiable object on his family's farm -- and government agents come to claim it -- she begins to suspect that nothing is what it seems. Emma's out-of-this-world discovery may be the key to setting things right, but only if she and Lucas can evade the agents who are after what they have. With all her hopes and dreams on the line, Emma sets out to save the boy she loves. And with a little help from a distant star, she might just have a chance at making those dreams come true.