A Net for Small Fishes by Lucy Jago
I would put this debut on par with Burial Rites. It really is that good. Based on a true event during the reign of James I, the novel focuses on the lives of two friends, one an aristocrat, one not, as they navigate the treacherous waters of society at that time for women. Lucy's extraordinary eye for detail and the depths of character she creates make for a genuinely satisfying read. It certainly ensnared me.