Marrying My Sister's KillerEpisode 13

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Yu-Jin is murdered by her husband Chan-Yeong and his mistress Na Ju-Hui. Soon after, her sister Yu-Ri is killed and time-travels back to before Yu-Jin's wedding. To avenge her sister, Yu-Ri decides to marry the murderer Chan-Yeong herself, just as her first love Tae-O reappears.