Tales of the Cthulhu Mythos is a collection of stories by horror writer H. P. Lovecraft centered on his original mythology of ancient gods, insanity, lost temples, and oceanic terror. Stories like Dagon and The Call of Cthulhu deal with common Lovecraftian themes like the insignificance of humanity, the vastness of space and the ocean, and the unknowability of threats arising from both places. Lovecraft's collection explores his frightening world in meticulous detail.