Uncommon Ground. Aliens in New York, #1

Dillon Lee's grandfather was a conspiracy theorist. Every summer he'd take Dillon on a tour of New York City while entertaining him with tales of aliens. Fifteen years later, after a phone call from a lawyer, Dillon is carrying his grandfather's ashes from landmark to landmark, paying a sort of tribute, and trying to figure out what to do with his unexpected legacy. When someone tries to steal the ashes, a guy Dillon has barely met leaps to the rescue, saving the urn and the day.
Steilang Skovgaard is a reclusive billionaire-and not human. He's been living in Manhattan for over twenty years, working on a long-term plan to establish a safe haven for his people. For seven years, his reports have gone unanswered, however, and he is the only surviving member of his interstellar team. The connection he forms with Dillon soon after meeting him is something he's missed, something he craves.
But after someone keeps trying to steal the ashes, it looks as though Dillon's grandfather was involved in more than theories-and might not have been exactly who everyone thought he was. Steilang doesn't know how close he can get to the truth without revealing himself, and Dillon is running out of people to trust. Can these two work out what's going on before the thieves set their sights higher?