That Hideous Strength (subtitled A Modern Fairy-Tale for Grown-Ups) is a 1945 novel by C. S. Lewis, the final book in Lewis's theological science fiction Space Trilogy.
That Hideous Strength (bersubjudul A Modern Fairy-Tale for Grown-Ups) adalah sebuah novel tahun 1945 karya C. S. Lewis, buku terakhir dalam karya fiksi ilmiah teologi Lewis Space Trilogy.