In the mid-20th century, Kaspar Hauser was referred to in several works of science fiction or fantasy literature: Eric Frank Russell, in his 1943 novel "Sinister Barrier", described Kaspar Hauser as a person who originated from a non-human laboratory. Fredric Brown, in his 1949 short story "Come and Go Mad", offered another theory about Kaspar Hauser. In Henry Kuttner's 1954 "The Portal in the Picture", the author suggests Hauser is from Malesco, a parallel world where science is treated as a religion and its secrets are hidden from the ordinary citizen. Robert A. Heinlein, in his 1963 "Glory Road", refers to "Kaspar Hausers" as an analogue to persons popping in and out of metaphysical planes. Harlan Ellison, in his 1967 story "The Prowler in the City at the Edge of the World", suggested that Hauser had been plucked out of time and later murdered by a female sadist named Juliette.