Jim takes a look at one of the early "dinosaur" films made with 1948's "Unknown Island," starring Virginia Grey, Richard Denning, Phillip Reed, Barton MacLane and Dick Wessel. An engaged couple hire a crusty old sea captain to ferry them to a legendary that reportedly has strange and mystifying creatures from the Earth's past. When they are met with a few dinosaurs and a large sloth man, the group realizes they may be in over their head. Find out what happens on this episode of "Monster Attack."