Time travel is by now a Korean drama staple which has been combined with many genres. Sadly for fans of this aspect, it mostly functions as a gimmick to spice up familiar stories. "Tunnel - Drama" does not break the mold in that regard, but the time bending crime series has a lot of good to offer.
Park Gwang-ho (Choi Jin-hyuk) is a no nonsense detective from 1986. Gwang-ho chases a local serial killer through a tunnel, only to find himself in the present day. The premise of the series is very simple and for the most part the element of time plays an important role in the plot. However, as I will elaborate on further down, viewers looking for a satisfying time-related mystery will once again be disappointed.