The decision to call the police in complicates the investigators' relationship. Key witness Hasan is no longer willing to cooperate, and the investigation stalls. Despite solid evidence of the collapse, the cause remains unknown. During the investigation, Marita encounters a violent subcontractor. The encounter deeply shocks her and makes her question her own decision to put the investigation ahead of her personal safety. As software expert Eero assists the team in the search for the missing explosives, a clear attraction develops between him and Marita.