The Minneapolis detectives' investigation threatens to uncover a series of horrendous secrets, some buried within the heart of the police department itself.

With the holidays over and the long cold winter looming, January can be a bleak month in Minneapolis. So what better way to bring a little cheer to the good people of the city than by sponsoring an old-fashioned snowman-building contest? In a matter of hours, a local park is filled with the innocent laughter of children and their frosty creations. But things take an awful turn when the dead bodies of police officers are discovered inside two of the...