In Heavy Lies the Crown in a flashback on the day Clarke Griffin shut A.L.I.E. down, Ilian under A.L.I.E.'s control, tortured her and killed his brother and father. He tried to get her take the key but she thought her son was a demon. When A.L.I.E was shut down, Ilian ran to his mother and she died in his arms after asking Ilian to avenge her.