From a Nebula and Hugo award winner, "one the best-loved authors in SF": A tale of humans and one robot navigating an alien puzzle-world (Publishers Weekly).
Following a conversation with a talking slot machine, Professor Edward Lansing finds himself mysteriously transported to a tavern on a long and empty road. It is immediately obvious to the educator that he is no longer on campus—or even Earth—and that he is not alone. Lansing's new companions—a female engineer, a military officer, a humorless priest, a poetess, and a robot named Jurgens—all hail from separate alternate realities and share Lansing's confusion. What is clear, however, is that they must continue down the road together, encountering a series of bizarre sights, dangerous obstacles, and perplexing puzzles along the way: an abandoned, decaying city; a set of doorways; a large blue cube; a tower that sings. Soon it is apparent they are all being tested for some eerie,...