Un asunto privado (Özel İlişkiler, A Private Affair) 1. Sezon 4. Bölüm (Masked party)

After detaining the killer it seems that Marina will be forced to give up her dream of becoming a cop, but thanks to Castaño the case is reopened. Together they conclude that the killer is still on the loose and the cops propose a plan to catch him: host a masked party for the clients of the House of Water.