Using her guile to relieve so-called respectable men of their ill-gotten gains, a woman on the run hides among a group of privileged women and bonds with an honest man while outmaneuvering a nemesis who blames her for his losses.

Mourning the passing of a family friend who has succumbed to a mysterious disease, Sarah and Frank work around their wedding preparations to unravel a web of secrets while exposing a Civil War-era crime and a present-day threat.

Detective Sergeant Frank Malloy and Victorian midwife Sarah Brandt join forces to find a young woman who goes missing after responding to "lonely hearts" ads in the newspaper.