This new collection of Gardner gems takes its name from an essay on a mathematical theme, about a jinn (or genie) trapped in a ‘Klein Bottle’ - an amusing tale that also teaches the maths phobic something interesting about a theoretical one-sided object with no distinction between inside and outside. Other topics in maths and physics include speculations about universes where time runs in reverse; the Banach-Tarski paradox (whereby a sphere, after being deconstructed, can be reassembled at twice its size); and a vigorous defence of the objective reality of mathematical theorems independent of human culture.On the literary side, Gardner discusses two neglected works by G K Chesterton, one of which concerns an imaginary but now very topical war between Islam and Christianity. He also considers the fantasies of L Frank Baum that don’t take place in Oz , Clement Moore’s ever-popular The Night Before Christmas , and the many fascinating books by Lewis Carroll that are sometimes overshadowed by his famous Alice in Wonderland . A treat for longtime Gardner readers or the perfect introduction for newcomers, The Jinn From Hyperspace offers a rich selection of stimulating intellectual wonders.