River of Night: Urban Fantasy (Shadow Kingdom) by Naomi Kuttner

"Ivan didn't know why the shadow wolf showed up. But it did save his life." Ivan can’t believe how his summer’s going. It’s not that he’s ungrateful. It’s wonderful to discover that magic is real. He just wishes this enchanting new world wasn’t out to get him. It's the summer before university, and Ivan’s stumbled into a world of shadow magic, monsters, and mayhem. Now all he has going for him is his best friend, a bossy raven, and an enigmatic shadow wolf. And that’s not nearly enough. Because Ivan must now defend his hometown from a deadly influx of killer monks, an ancient evil, and a curse that could get him killed - or win him the girl of his dreams. River of Night is a fun, fast-paced urban fantasy perfect for fans of Holly Black, Maggie Stiefvater, and Rainbow Rowell. Read more