In the Nick of Time S01 E14 Episode 14

And as Fotis and Spyros get home upset after their findings at the newspaper archives, some other people live their own drama. Trapped in a boutique changing room, Dalia, Zoumboulia and Aggela use the most incredible ways so the bad guy (who suddenly decided to go shopping like a normal person) won't find them. A video club subscription card will lead them to a close surveillance outside a video club, so he can lead them to his house. Who is this persistent villain?