Sir Arthur Conan Doyle's classic tale of prehistoric beasts hidden in the modern world comes to life in this "dandy of a thriller" (The Film Daily) from "Master of Disaster" producer Irwin Allen (The Poseidon Adventure)!

English zoology professor George Edward Challenger (Claude Rains) discovers a "lost world" of Jurassic reptiles isolated within the thick, unexplored Amazon. To prove their existence, he organizes a group expedition with playboy Lord Roxton (Michael Rennie), American socialites Jennifer Holmes (Jill St. John), her brother David Holmes (Ray Stricklyn), news writer and photographer Ed Malone (David Hedison) and Challenger's colleague and rival Professor Walter Summerlee (Richard Haydn). Local pilot Gomez (Fernando Lamas) and travel guide Costa (Jay Novello) lead the pack on an awesome havoc-wreaking adventure where dinosaurs from long ago still roam free.

Also included in this 2-disc collector's set is the first film adaptation of The Lost World. Produced in 1925, this silent, Black & White feature stars Wallace Beery, Bessie Love, Lloyd Hughes and Lewis Stone.