When Dr. Marjoribanks’s wife dies, his teenage daughter makes it her purpose in life “to be a comfort to dear papa.” At least, Lucilla thinks, ten years of such devotion might suffice, by which time she might have begun to “go off.” But beneath this grand intention lies a yet more ambitious plan: to revolutionize the moribund and constricted social life of Carlingford. She is remarkably well-endowed for such an...