Mika is finally meeting her mother. It should be a cause for celebration. Instead, it's one of caution as she is drawn into a dark and twisted mystery.

Now thirteen, Mika has left behind her Stockholm orphanage for a treacherous journey with Detective Hoff to finally meet her mother, Annie Moonwind, a maid at the imposing Roseboon estate. Upon their arrival, and to their surprise, Valdemar is mistaken for the local constable, and Mika his errand girl, summoned to arrest Annie for mysterious crimes.

But are dark forces at work at Roseboon? After all, doors are kept bolted. Windows are nailed shut. And screams pierce the dark. Maybe something wicked has been unleashed. Everything points to a creature that only comes at night. So why is Annie in the crosshairs?

Now Mika and Valdemar must maintain their bluff long enough to uncover the mysteries of Roseboon and free Mika's mother from captivity before accusations against her become inescapable. Mika and Detective Hoff are back in this spine-tingling new installment of the Moonwind Mysteries series!