Goodbye, Thank You For Everything - S1.E27

In Wook misses Jung Won and Ma Ri leaving the sanitarium. However, he now knows where Ma Ri's mother is and now knows a way to get Ma Ri back. Without knowing the jeopardy they are in, Jung Won and Ma Ri go to see Jung Won's mother. Meanwhile, In Wook is enlightened by Seong Ho's slip of the tongue.