In 1930, with his interest in Solomon Kane dwindling and his Kull stories not catching on, Howard applied his new sword-and-sorcery and horror experience to one of his first loves: the Picts. His story "Kings of the Night" depicted King Kull conjured into pre-Christian Britain to aid the Picts in their struggle against the invading Romans, and introduced readers to Howard's king of the Picts, Bran Mak Morn. Howard followed up this tale with the now-classic revenge nightmare "Worms of the Earth" and several other tales, creating horrific adventures tinged with a Cthulhu-esque gloss and notable for their use of metaphor and symbolism.