Light years from home
(Book)

"Evie Shao and her sister, Kass, aren’t on speaking terms. Fifteen years ago on a family camping trip, their father and brother vanished. Their dad turned up days later, dehydrated and confused—and convinced he'd been abducted by aliens. Their brother, Jakob, remained missing. The women dealt with it very differently. Kass, suspecting her college-dropout twin simply ran off, became the rock of the family. Evie traded academics to pursue alien conspiracy theories, always looking for Jakob. When Evie's UFO network uncovers a new event, she goes to investigate. And discovers Jakob is back. He's different—older, stranger, and talking of an intergalactic war—but the tensions between the siblings haven't changed at all. If the family is going to come together to help Jakob, then Kass and Evie are going to have to fix their issues, and fast. Because the FBI is after Jakob, and if their brother is telling the truth, possibly an entire space armada, too." --book jacket