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.