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Seasons
Episodes (Season 1)
1. Episode 1
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2. Episode 2
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3. Episode 3
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4. Episode 4
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5. Episode 5
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6. Episode 6
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7. Episode 7
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8. Episode 8
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9. Episode 9
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10. Episode 10
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11. Episode 11
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12. Episode 12
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13. Episode 13
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14. Episode 14
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15. Episode 15
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16. Episode 16
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Signal
Overview
Detectives from the present and a detective from the past communicate via walkie-talkie to solve a long-time unsolved case.
Top Cast
Lee Je-hoon
Park Hae-young
Kim Hye-soo
Cha Soo-hyun
Cho Jin-woong
Lee Jae-han
Jang Hyun-sung
Kim Bum-joo
