Signal: 1x1
You're Doomed
Profiler Park Hae-young hears a man calling his name through a discarded two-way radio. The voice starts talking about an unsolved crime.
1 - 1You're Doomed Jan. 22, 2016
1 - 2We Still Have a Chance Jan. 23, 2016
1 - 3We Can Prevent the Killings Jan. 29, 2016
1 - 4We Found the Killer Jan. 30, 2016
1 - 5Changing the Past Alters the Present Feb. 05, 2016
1 - 6Catch Him by All Means Feb. 06, 2016
1 - 7We Must Dig Deeper Feb. 12, 2016
1 - 8How Are You Alive? Feb. 13, 2016
1 - 9Hongwon Dong Case Feb. 19, 2016