Nineteenth century England was a time of empire-building and discovery. Men found fame in naming things never before named, in bringing to light facts previously unknown. It was the aspiration of many a young man, and Robert Manning Grayson is no different. While on Persian soil, he comes upon an obscure movement whose ardent belief is that Christ has returned. With no other motive than to apprise his countrymen of its existence, the Oxford don gains renown as one of England's foremost authorities on the subject . . . but not without detractors. Yet this saga is also about Meredith Emery, an...