[Spoiler] 'Signal' Lee Je-hoon and Cho Jin-woong start working on the last cold case
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On the 11th episode of tvN's Friday & Saturday drama, "Signal", Hae-yeong (Lee Je-hoon) and Jae-han (Cho Jin-woong)'s last case, 'Injoo high school girl case' began.
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Hae-yeong advised Jae-han that there was only one case left and informed him the 'Injoo high school girl case' in 1999 was his last case left to solve.
Hae-yeong asked, "Detective, could you do me a favor? Can you please tell me the truth about what happened in Injoo. It's an important matter for me".