Watchers: A thriller of both heart-stopping terror and emotional power by Dean Koontz
They escape from a secret government: two mutant creatures, both changed utterly from the animals they once were.
And no one who encounters them will ever be the same again: a lonely widower; a ruthless assassin; a beautiful woman; a government agent.
Drawn together in a deadly hunt, all four are inexorably propelled towards an evil beyond human imagining.