Shadowdance (Darkest London Series #4)

Once a heart is lost in shadow . . .
Life has been anything but kind to Mary Chase. But the Society for the Suppression of Supernaturals has given her purpose. Now she's been tasked with catching a vicious murderer dubbed the Bishop of Charing Cross. But someone is already on the case-and the last thing he relishes is a partner.

Only someone who lives in darkness can find it.
Jack Talent has been alone with his demons for many years.
He never expected to have the…