What is Fatmagul's Fault? S01 E20 Episode 20

"Mustafa learns from the person he hates the most, Kerim, that the truth he wants to believe is a big lie. Now both the criminals and the truth are in the open. In the face of Mustafa, Kerim sacrifices even his own life to protect Fatmagül. Fearing for Kerim's life, Grandma Ebe goes to the police despite all the obstacles."