A dense book with two parallel stories: one about an older female historian nearing retirement and dealing with infirmities who finds a hidden cache of documents, the other about a Jewish scribe in 1650s London, struggling to survive as the plague approaches. The historian is joined by a young American Jewish man working on his PhD. A LOT of interesting and well-told Jewish history (from Portugal, Spain, the UK, and Israel) and a story line which keeps you engaged.