The threat of terrorism and biological warfare become all too real in this riveting thriller when the danger comes from a family's most cherished pets. Tessa Sanderson, ex-FBI agent, has moved to a sleepy Maryland town to escape her tragic past. When the town's beloved dogs begin viciously attacking pet owners, federal CDC agents determine that the dogs are carrying a mutated flu affecting the aggression center of their brains, for which their is no known cure. Tessa offers to help round up and quarantine the dogs, even though some unconvinced locals are preparing to protect their pets by any means necessary. But she has another reason for getting involvedsomeone has been sending her threatening emails in Arabic claiming responsibility for the virus, and Tessa is resolved to go deep undercover to expose this deadly conspiracy. Combining hard science with thoughtful narrative, this chilling tale of science fiction explores the complex relationships between dogs and their owners.

"A spine-chilling, suspense-laden story of pets turned unwitting killers. Kress brings her thorough knowledge of genetics and biology to bear in this nicely creepy thriller."  Publishers Weekly

Nancy Kress is the author of 23 books, including Beggars in Spain, Nothing Human, Probability Space, Stinger, and her bestselling Write Great Fiction series. A recipient of the Hugo, Nebula, Sturgeon, and John W. Campbell Memorial awards, her work has been translated into 16 languages. She lives in Rochester, New York.