]William A.Drake""s screenplay was based on his own play adaptation of author/playwright Vicki Baum""s 1929 best-selling novelMenschen im Hotel(translated ""People at the Hotel"").At the receptionist""s desk with his legs stretched out, as the girls stood waiting, he played with a coin hat he rolled over his fingers, and turned on the portable radio.Although in the ending, the evil, callous and monstrous female protagonist, doomed to a tragic end, received due compensation for her profligate ways, some felt it was not commensurate with the totality of her ghoulish wickedness." Jor-El then explained Superman""s unique differences:Earth""s sun is younger and brighter than Krypton""s was.