The golem, that legendary monster/ watchman/ savior supposedly created by Rabbi Judah Loew in Prague in 1601, has never lost its ability to inspire the creative imagination. Sherwood, whose last novel, Vindication, was a masterful interpretation of the life of Mary Wollstonecraft, here crafts another rich historical fiction, juxtaposing the beleaguered lives of the residents of Prague's Judenstadt with the baroque excesses of the mad, egocentric Hapsberg emperor Rudolph II. As in the legend, Rabbi Loew creates the golem in response to rumors that the Jewish community will be eradicated in a pogrom. In Sherwood's version, the huge figure, miraculously fashioned out of mud from the Vltava River and a secret code embedded in the Kabbalah, is immediately more human and complex than the original. Given the name Yossel, but lacking a tongue and a soul, the giant falls in love with 18-year-old Rochel Werner, a talented seamstress recently married to the community's shoemaker. In counterpoint to the forbidden love story, we read of Rudolph's demented scheme to obtain a potion that will grant him immortality. Brought from London, real-life alchemists Dr. John Dee and sidekick Edward Kelley soon find themselves in a feverish race with time to convince Rudolph that they possess the formula. Meanwhile, Rudolph holds the Jewish community hostage since he thinks Rabbi Loew may know the secret to eternal life. Rudolph's well-documented dementia is balanced with the tender love story, even if the latter's resolution seems more wishful than credible in what is on one level a tale of a Jewish community whose right to exist is under continual threat. Sherwood's supple prose and her ability to integrate historical background into a timely and resonant narrative should give this eloquent literary effort popular appeal. 5-city author tour. (July 8)