Bad Thief, Good Thief
Episode 38 (1x38)
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Dol Mok wakes up in an unfamiliar place and attacks the person who tries to take care of him. He makes a deal with the man who saved him in order to get back at Joong Tae. He fakes his death, but Joon Hee and So Joo find out that Dok Mok's death was fabricated.