From the blurb:
"Ruth bas Elazar Saul is a Jewish midwife whose revolutionary methods combine the radical philosophy of Spinoza with the ancient ways of the kabbala, leading to accusations of witchcraft. Her love affair with the Catholic cleric, Detlef von Tennen, may save her in the short term, but at a time of brutal repression and religious persecution, the price of belief, and love, is high."