In this vivid study of mimicry and camouflage NOVA shows dramatically how snakes, butterflies, fish, turtles and many other kinds of animals, both predators and their intended victims, use remarkable forms of deception to achieve their goal: to eat, or avoid being eaten.

For the first time on television a rigorous, scientific investigation into the fact, fiction, and hoax of unidentified flying objects. With vivid film and accounts from several eyewitnesses including astronauts, NOVA sifts the evidence for and against the existence of UFOs.