The consecutive absences of the Abbess from the monastery raise suspicions against Sister Arsinoe. The Abbess is forced to reveal her secret investigation and takes her along on the next mission. Sofianos and Tsakalakis use the findings from the forensic report and find out important information about Angelos' life. At the same time, Stamatis is afraid that the police will track them down and pressures Karaiskos to stop dealing with Petros' murder. A while later, one of the nuns is getting attacked inside the monastery.