SignalOverviewFifteen years apart, two driven detectives work together to crack an unsolved kidnapping case and rewrite history.First airedJanuary 22, 2016URL slugsignalGenresFantasyCrimeActionMysteryArtworkPosterBackgroundIconBannerSeasonsSpecials2 episodesSeason 116 episodesCast & crewCast — Lee Jae-han — Cha Soo-hyun — Park Hae-Young
