This episode was so sad and depressing, but what a great actress the girl who plays Elisabeth is. She is so expressive without speaking. She was quite young when she filmed such a dark scene. Also, Mikkel and Ines went into protective service for a while after Ulrich tried to kidnap Mikkel. So he just missed his mother by one day. It's so sad. Katharina could have brought home both Mikkel and Ulrich. By the way the young Peter is played by Peter's real life son like how a real father and son play the old and middle age version of The Unknown.