Front cover: When vast lowering shadows blacken a sunlit sky, guard against the menace of the invisible intruder from space who kills - destroys. Back cover: A once handsome youth lay hidden behind a boulder on the isolated new England coast, his body hideously torn and a deep burn penetrating his chest... The sky darkens and fills with vast shadows. A wild panic sweeps the beach as an alien shape forms in the sky for the barest instant... They were being attacked, one by one, but how can you defend yourself from an enemy you cannot see, from a danger of unknown origin?
Author
Aka Lyda Belknap Long. Frank Belknap Long was a prolific American writer of horror fiction, fantasy, science fiction, poetry, gothic romance, comic books, and non-fiction. Though his writing career spanned seven decades, he is best known for his horror and science fiction short stories, including early contributions to the Cthulhu Mythos. During his life, Long received the World Fantasy Award for Life Achievement (at the 1978 World Fantasy Convention), the Bram Stoker Award for Lifetime Achievement (in 1987, from the Horror Writers Association), and the First Fandom Hall of Fame Award (1977).
