Tunnel

The Return (1x16)

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Yeon Ho psychologically analyzes Mok Jin Woo and helps Kwang Ho and Sun Jae to get a confession from him. After dealing with everything in the present time, Kwang Ho decides to return to the past. Yeon Ho and Sun Jae have a hard time letting him go, but Kwang Ho insists to return to Yeon Sook.