New Mexico State Police Officer Lee Nez is a nightwalker, a Navajo vampire. Thanks to the quick work of a Navajo shaman, Lee can walk about in the day and prefers his blood refrigerated-but his vampire nature makes him a magnet for other supernatural entities. Take his current cases. Lee suspects that the vampire who created him during World War II is back in the US, searching for a cache of stolen plutonium. And Lee's being stalked by the remnants of a pack of skinwalkers-Navajo shapeshifters-who are literally out for his blood. When the FBI shows up, in the person of the very attractive Diane Lopez, Lee's problems only increase. He can't tell Diane that the case she's looking into involves skinwalkers or that its his supernatural abilities that make him such a great cop. And teaming up with Lee could be very hazardous to her health.