Traitor Angels by Anne Blankman

Traitor Angels is a heady mix of historic details, atmosphere, and intrigue. Set in seventeenth-century England, during the reign of King Charles II, Blankman easily weaves in historical figures, you'll see page time from John Milton, Galileo, and King Charles II as well as visit a Physic's Garden in an abandoned Oxford cemetery, dance at a ball hosted by the Duke's of Buckingham, and go on a scavenger hunt across England's countryside as the protagonist Elizabeth deciphers the secret clues left in her father's work Paradise Lost.