Which C.S. Lewis work is a science-fiction novel about the organization N.I.C.E.?

That Hideous Strength is the C.S. Lewis science-fiction novel about N.I.C.E., a powerful organization seeking to reshape humanity through technology and social control. Published in 1945, it concludes the Space Trilogy.

Unlike the first two books, the novel is set chiefly on Earth. Its plot follows Mark and Jane Studdock as they become entangled with N.I.C.E. and with forces opposing the organization. Lewis combines dystopian fiction, medieval symbolism, and philosophical criticism of unchecked technocratic power.

The title echoes a line from David Lindsay’s 1920 novel A Voyage to Arcturus, which Lewis admired. N.I.C.E. is an acronym for the National Institute of Co-ordinated Experiments. The book is often called a sequel to the Ransom novels even though its setting and narrative scale differ markedly from the earlier planetary adventures.