The Alien Author:Raymond F. Jones Leisure Books Paperback No. 444Zk; published 1977 (per ISFDB); original copyright 1951. "A Scourge Alive. There lived on Mars 500,000 years ago, a race so intelligent, so superior to ours, that they knew the secret of everlasting life. They chose instead to have one man come back to life exactly 500,000 years after his death. His reappearanc... more »e in the Galaxy World was enough to set planet against planet, ideology against ideology, man against man, and life against death."« less