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 involved—someone 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.