Do you believe in Dark Entities? Beings so twisted that they lack all humanity, yet they walk among us unnoticed.

Someone is murdering young people in the theatre district. Has a serial killer come to London? Or are these murders of the poorest residents of Spitalfields simply the precursor to a murder for hire? All indications are the ultimate target will be a person of stature and influence.

But why murder these young people?

What has brought him to England, and why now when his previous murders have been confined to the continent?

The Agency is on it, but they have a problem. There are three suspects, and one is the Father of a close friend.

It falls to Lissa to determine which one it is and stop him from murdering again.