It didn’t take long for the genres of horror and science fiction to start mingling. It’s a natural marriage, after all, and the two often blend seamlessly, the best and among the earliest example likely being the first two Universal “Frankenstein” movies. Throughout the 1950s, horror and science fiction were frequent bedfellows as atomic terrors ran amok across assorted landscapes. Increasingly, however, it was the science fiction element of the films that was in the forefront, with the horror placed in the background unless one was genuinely terrified of superimposed grasshoppers. By the middle of the 1950s, science fiction was still enjoying the occasional big budget celebration a la This Island Earth (1955) and Forbidden Planet (1956) while horror films were becoming increasingly cheap, b-movie quickie affairs. Not that that means there weren’t plenty of gems in the mix, but compared to science fiction, horror was lagging.