The Inverted Dream - S1.E4

Due to an explosion, Hyung In’s partner Si Jeong gets injured, which devastates Hyung In. This makes him drop the case. However, a key suspect of Jae Young’s case, Kim Hwan Kyu turns himself in. Jung Hyun hears from Jae Young’s friends that Jae Young had sent them a message a month before Kim Hwan Kyu turned himself in, and this makes Jung Hyun believe that Jae Young is still alive.