An alien spacecraft plummets to Earth, passing between the twin towers of the
World Trade Center and coming to rest in Central Park. Two very different
aliens survive, an Oinn and a Blettr, seemingly the bitterest of enemies, one
captor, one captive. But when battle fleets from both races converge on Earth,
it is discovered that the two races are in league, their plan: to invade Earth.
It is left to Colonel Rob Hayward to plan the defence of the planet, with the
Russians his allies against this outside threat.
New York: Ace, April 1982, 211pp., ISBN: 0-441-37153-1, tpbk. Cover: David Schleinkofer. Illustrated by Evan TenBroek Steadman.
New York: Ace, May 1983, 224pp., ISBN: 0-441-37157-4, pbk. Cover: David Schleinkofer. Illustrated by Evan TenBroek Steadman.
London: Severn House, January 1984, 150pp., ISBN: 0-7278-0969-5, hbk. Jacket: John James.
London: Sphere, February 1984, 150pp., ISBN: 0-7221-4532-2, pbk. Cover: Peter Elson. Reprinted 1984; February 1987; 1987.
as: Der Tag, Als Die Erde Besetzt Wurde. Munich: Bastei Lubbe, 1985, 202pp., ISBN: 3-404-21186-3, pbk. Cover: Paul R. Alexander. Translated by Bodo Baumann. [German]
Analog, October 1983, p.168. Review by Tom Easton.
"There's action and wit and good stuff for a B-movie. There's
superficiality, and lazy thinking, and pictures, and good stuff for a
B-movie. It's a distinct lightweight. Ignore it."
Science Fiction and Fantasy Book Review, September 1982. P.31.
Review by Martin Morse Wooster.
"There's very little intelligence in Invasion: Earth .. and the only
comedy is unintentional ... [A] dreadful, illustrated potboiler ... The
aliens are as believable as rubber-suited villains from monster movies.
Harrison has written a self-parody, a bad space opera which Harrison
satirised more effectively in his Star Smashers of the Galaxy
Rangers (1973). Avoid."
Science Fiction Chronicle, March 1983. Review by Don
D'Ammassa.