The somber film""s screenplay (by Robert E.Sherwood and Joan Harrison) was based on a literal ranslation of Daphne du Maurier""s 1938 gothic novel of the same name, in the tradition of Charlotte Bronte""sJane Eyre.The next morning while eating breakfast cereal, Karin was watching the classic black-and-white Frank Capra filmHarvey (1950)on television.Superman caught the out-of-control elevator, told Lois: "I believe this is your floor," left her off on a lower level, and pushed the elevator (with the bomb) up the shaft and into outer space past Earth""s moon.Climbing he Mutia escarpment is very treacherous, with steep cliffs and narrow ledges while the bearers carry heavy burdens.