River Marked (Patricia Briggs)

I still love this series of contemporary fantasies, featuring Mercy Thompson, who is tough, brave, sexy, and compassionate. In this story, the focus is firmly on Mercy's relationship with Adam, and on coming to terms with her Native-American culture and with Coyote, as they band together to fight an abomination of a river monster that's been returned from the dead to prey on people. Her mechanic shop, the vampires, fae, and even the rest of the wolf pack are secondary. The action is intense, the stakes are high, and Adam and Mercy are put through the wringer in every possible way, but they manage to come through in the end. I will definitely keep reading these as long as she keep writing them.