I know that a lot of people liked this show, but I couldn't, for the life of me, forgive the mess that I was watching. I was very disappointed in the writing, not the acting. Lee Jong Suk and Park Hae Jin were both wonderful in this mess of a drama. I'm all for suspending disbelief, but this show, in the first place, didn't seem to know in which direction it wanted to go. Baddies that don't die no matter what happens to them, a change in the focus of the show (N. Korea was a good starting place, but went horribly awry), things happening in a hospital that have absolutely no foundation in reality, name/identity changes (who can keep up with the names?), and it seemed like the inmates were running the asylum! The ending was very disappointing and caused an even further suspension of disbelief - the main characters disappear for a year - did no one look for them? Ugh!