anna makarova finds a girl's profile on a social network and sees that she has the geolocation function shows where anna is at the time of the correspondence in the chat of operas, he is looking for the time when the theft happened and understands makarova was just in the area where the crime occurred, the girl is summoned for interrogation, they take fingerprints, and do not match those found in the fedosovs' apartment. peter swears that he will never enter the house invited, so she herself came, the girl admits, her lover boasted that his wife has expensive jewelry, they say, how good. they would have looked at anna makarova, it sunk into her soul, and she decided to try on the jewelry, secretly made a copy of peter's keys, then bought tickets for a concert in the last moment, she allegedly fell ill. and she gave them to her lover, they say, go with your wife, and she went to visit the fedosovs and found gold. moreover, she managed to chat with friends in a chat, chat right from the crime scene, love for social networks and let the criminal down, the detective quickly figured her out.