sleep??suspended animation for thirty years. But when he awoke in the far different world of a.d. 2000, he made an amazing discovery. And suddenly Dan had the means to travel back in time?and get his revenge. Once again, the author of Stranger in a Strange Land and Starship Troopers displays his genius. The Door into Summer proves why Robert Heinlein's books have sold more than 50 million copies, winning countless awards, and earning him the title of Grand Master of Science Fiction. … ( more Dan Davis, an electronics engineer, had finally made the invention of a lifetime: a household robot that could do almost anything. Wild success was within reach?and Dan's life was ruined. In a plot to steal his business, his greedy partner and greedier fiancee tricked him into taking the ?long