Sally Lockhart quartet

In nineteenth-century London, sixteen-year-old Sally, a recent orphan, becomes involved in a deadly search for a mysterious ruby.

In London in 1881, twenty-four-year old Sally finds her young daughter and her possessions assailed by an unknown enemy, while a shadowy figure known as the Tzaddik involves her in his plot to defraud and exploit the hordes of Jewish immigrants pouring into the country.