William Fitzgerald Jenkins is an obscure name in literary circles, and it certainly doesnt seem appropriate for an author who wrote thousands of short stories in science fiction, alternate fantasy, and other types of weird fiction genres. Perhaps thats why Jenkins chose a more eccentric pen name, Murray Leinster, to publish over 1,500 short stories and articles, 14 movie scripts, and hundreds of radio scripts and television plays. Leinster is not as well known as the 20th centurys biggest names in the genre, like Lovecraft or Hitchcock, but he left a lasting mark on science-fiction. Leinster is still credited as the first to write stories about parallel universes, which had an influence on subsequent writers stories, including Isaac Asimovs The End of Eternity. Incredibly, Leinsters short story First Contact was even the subject of a lawsuit against Paramount Pictures Star Trek: First Contact movie, with Leinsters heirs claiming copyright infringement. The courts threw out the heirs suit, noting that the phrase first contact had become so common in science-fiction circles that it could no longer be considered protected. Perhaps thats the most fitting tribute of all to Leinster. This edition of Invasion is specially formatted with a Table of Contents and is illustrated with pictures of Leinster, his life and work.