Robert A. Heinlein
When a stranger attempting to deliver a cryptic message is shot dead at his table, Dr. Richard Ames is thrown headfirst into danger, intrigue, and other dimensions, where a plot to rescue a sentient computer could alter human history...
Science Fiction,Fiction,Science Fiction Fantasy,Fantasy,Science Fiction,Time Travel,Speculative Fiction,Mystery,Adventure,Audiobook,Classics
The Cat Who Walks Through Walls