The black mamba is the most dangerous snake on Earth. Its bite is one-hundred percent fatal, sometimes within minutes. Unless you are treated with antivenin - a serum created from snake-venom. Doctor Jack Wright runs the Venom Lab, keeping mambas, cobras, and vipers of all kinds. He risks his life daily, extracting toxins directly from the fangs of the most venomous serpents in the world. But after a break-in at the lab, dozens of these deadly reptiles have escaped into the surrounding neighborhoods. Now, kids are getting bit, and entire families are turning up dead. Jack knows there will be more - and only he can stop it. But even as he hunts down the deadliest creatures on Earth, Jack discovers something more sinister than snake-bite. Something called murder.