by Valerie Martin
Doubleday; 263 pages; $18.95
After a grim childhood and some harsh early jobs, a young servant named Mary Reilly finds employment in a comfortable London house. Mary's literacy -- unusual among 19th century domestics -- enables her to keep a diary. In it she jots down the details of her work and notes the kind attentions of her master, a gentle, reclusive physician who spends a lot of time in his laboratory. Her narrative is well under way before she happens to drop his name, which is, of course, Dr. Jekyll.
Valerie Martin's grafting of a...