William P. McGivern, a popular and prolific science fiction writer in the 1940s and 1950s (under his own name as well as the pseudonyms Gerald Vance and P.F. Costello), later achieved fame as a noir and hardboiled mystery author of such classics as «The Big Heat.» The First William P. McGivern Science Fiction Megapack collects 25 of his early science fiction stories, including: <P> JOHN BROWN'S BODY<BR> THE VISIBLE INVISIBLE MAN<BR> THE DYNAMOUSE<BR> ...