Limber couples seeking challenging sexual positions will find them in Sex Masters. It showcases difficult, provoking yet exciting positions such as The Sixty-Eight, Swing Low Sweet Chariot, and The Corkscrew. The photography is as tasteful and striking as the first two books in the series, Sex 101 and Advanced Sex. An illustrated checklist at the beginning of Sex Masters catalogues the 200 positions of its predecessors. This is the final book in the popular Randi Foxx sex-positions trilogy.