 All 65 episodes were written by Ray Bradbury and many were based on short stories or novels he had written, including "A Sound of Thunder", "Marionettes, Inc.", "Banshee", "The Playground", "Mars is Heaven", "Usher II", "The Jar", "The Long Rain", "The Veldt", "The Small Assassin", "The Pedestrian", "The Fruit at the Bottom of the Bowl", "Here There Be Tygers", "The Toynbee Convector", and "Sun and Shadow".Many of the episodes focused on only one of Bradbury's original works.However, Bradbury occasionally included elements from his other works.