One morning, an armed man storms into the department store in the Mariemeri area, killing anyone unfortunate enough to cross his path, and then disappears. The Örebro Police launch a manhunt to locate him and, indeed, find him after a few days. Dead. The case is closed and everyone returns to their normal lives - everyone except one.

The life of Inspector Anders Economides has been turned upside down. After an outburst of anger, his career takes a downturn and his family falls apart. His obsessions haunt him, but they are his only hope to solve the case and simultaneously save his family from an invisible danger.