The alien beings on the home planet give Alex one of the three Stones of Midnight to open a worm hole and return to Earth. Trevor, Michael's long-lost brother, hitches a ride without the aliens knowing. When Alex returns to Earth, he is terrified; he has a horrible feeling that Trevor would do anything--even kill him--to get the Stone of Midnight.
Overjoyed at seeing Alex alive and well, the teens think it's also great news that Michael's brother Trevor has also arrived. When Alex convinces the others that Trevor might be a threat, Michael is torn about where his loyalties should lie--with his friends or with his family? But after Trevor tries to steal the stone from Max, Michael is forced to accept that his brother isn't who he thought he was.
Meanwhile, Kyle Valenti, distraught over the murder of his father, kidnaps Maria's little brother Kevin in order to force the truth out of the teens. Threatening to kill Kevin, the teens fear there is little they can do--and thus this book ends on a cliffhanger.