Signal Season 1 Episode 15
Is It Really You?
Hae-young is arrested for the murder of Chi-soo. Soo-hyun hears Jae-han apologizing over the radio for not being able to prevent Sun-woo's death.
Guest Stars
Son Hyun-joo
Jang Young-cheol
Jeon Su-ji
Kang Hye-seung
Shin Yi-Joon
Kang Hye-seung (Young)
Seo Ji-hoon
Jang Tae-jin
Kim Woo-seok
Lee Dong-jin