A three-part crime miniseries from the new cycle Detectives from the Holy Trinity, directed by one of the best present-day Czech film directors Jan Hrebejk. Containing retro-elements and framed by an authentic and realistic description of the crime investigators` work, it seeks to meet the criteria of the crime genre inspired by the British literary and film traditions. The chief characters are Major Výrová, lieutenant Mráz and their controversial boss - colonel Vitous. Together they are investigating a murder involving the exorcising ritual.