Book excerpt: Devotees of SF and literary mystery will enjoy this fast-paced, well-thought-out adventure that takes a college professor / Hemingway scholar on an eerie journey to coexisting universes. The characters reenact their lives in each slightly different, slightly worse universe. In a Key West bar, Baird is conned into writing a story in Hemingway's 1920s style, which could be passed off as one of the contents of the famous valise left on a train by Hemingway's then-wife Hadley. Returning to Key West from the Hemingway Collection at the Kennedy Library, Baird suddenly finds Ernest Hemingway sitting opposite him in the train compartment. This is, however, a nonhuman who can take on any form, and who has come to warn Baird not to finish the Hemingway pastiche. In a lively, philosophical conversation, the temporal policeman explains that if Baird continues in his plan he will be killed. As each attempt to murder him fails, Baird finds himself in a slightly altered universe--and in one of these supernatural worlds, Baird evolves into Hemingway himself.