mysterious incidents

This episode is something more than I had expected since there are too much revelation happened and it is circled with the black bridge what really happened from the year 1991 and the present and I know now the history of their boss is more clearer why he said that yi kang can do a great job more than him because he dont want to repeat the same mistake he did at that bridge, plus I felt sorry for da won she does not deserve to be killed :<