We are at “Wentworth,” a guest house in the fictional town of Bolton Spa, which offers baths and nasty-smelling waters to a group of permanent invalids. Wentworth is terribly genteel, recognized not only for the comfort it offers but also for the social standing of its guests. Who — this being a Benson novel — are silly at best, stupendously annoying at worst. The stars of the show are the pompous, self-regarding Colonel Chase, a former Indian Army officer who lords it over the other guests at Wentworth, bragging incessantly about his excellent health and bullying them all at the bridge table, a pair of middle-aged spinsters who later become a couple and a Mrs. Bliss who espouses Mental Science, a thin disguise for Christian Science...