在罪犯中被称为“阴间使者”的韩武江（宋承宪饰），总是喜欢从头到脚一身黑色的装扮，是一个冷血的角色，兼具反转魅力。能够预测死亡的平凡女子姜夏岚（高雅拉饰），表面上看起来有些难以沟通，实际上心地柔弱、充满泪水。李艾儿饰演急诊医生尹秀婉，身世神秘。金桐俊饰演财阀二世吴万洙，性格明朗亦有一点卑劣。
地狱使者 (季节 1)
It's Not a Curse (集 1) 6.5
播出日期: 2017-10-14
运行时间: 85 min
概述: Since she was little, Ha-ram has relied on her sunglasses to keep her sanity, because without them, she begins to see terrible things.
Reborn (集 2) 7.0
播出日期: 2017-10-15
运行时间: 77 min
概述: Both having important things to say to Mu-gang, Su-wan and Ha-ram visit his hospital room, but he doesn't seem to recognize either of them.
Black (集 3) 7.5
播出日期: 2017-10-21
运行时间: 79 min
概述: Notorious for his coldheartedness, Grim Reaper 444 is a big name in the otherworld. But his newly assigned partner threatens to ruin his reputation.
I Need You to Be My Eyes (集 4) 7.5
播出日期: 2017-10-22
运行时间: 73 min
概述: Devastated Ha-ram blames herself for Mu-gang's memory loss. 444 is desperate for Ha-ram's help, but Ha-ram isn't easily persuaded.
She Will Never Save Others’ Lives (集 5) 7.5
播出日期: 2017-10-28
运行时间: 69 min
概述: Determined to save the boy, Ha-ram heads back to the city of Mujin alone. Black is reminded of his consequences if Ha-ram succeeds in her endeavor.
Side Effects (集 6) 7.5
播出日期: 2017-10-29
运行时间: 78 min
概述: Waking up from a nightmare about a videotape, Black realizes he's becoming more and more humanized and decides to hasten his search for his partner.
What Parents Would Do For Their Children (集 7) 7.5
播出日期: 2017-11-04
运行时间: 85 min
概述: While at the hospital to do a favor for Man-soo, Ha-ram sees a vision of a stranger's death that contains a crucial piece of information.
Falsely Accused (集 8) 7.5
播出日期: 2017-11-05
运行时间: 88 min
概述: As Black learns of the details behind Mujin’s shopping mall disaster, he finds it increasingly hard to set his emotions aside as a Grim Reaper should.
Staged (集 9) 7.0
播出日期: 2017-11-11
运行时间: 72 min
概述: With Tiffany's assaulter still unidentified, Ha-ram strives to protect the lives of those involved in the incident -- much to Black's annoyance.
Proof Delivered (集 10) 7.0
播出日期: 2017-11-12
运行时间: 72 min
概述: After hearing an explanation about Mu-gang's childhood photo, Black becomes troubled that Ha-ram doesn't know the truth.
Did You Really Save Other Humans? (集 11) 7.0
播出日期: 2017-11-18
运行时间: 69 min
概述: At the site of the protest, Ha-ram foresees a fire accident involving a small child. Black crosses the line that a Grim Reaper should never cross.
I'll Never Forgive You (集 12) 7.0
播出日期: 2017-11-19
运行时间: 76 min
概述: Despite a stranger's warning about meddling, Ha-ram tries to track down a serial murderer -- even though an investigation is already underway.
Where Is Ha Ram? (集 13) 7.5
播出日期: 2017-11-25
运行时间: 77 min
概述: As the detectives gather details about the psychopathic killer who's shaking up the country, Black continues his frantic search for Ha-ram.
Crucial Evidence (集 14) 7.5
播出日期: 2017-11-26
运行时间: 75 min
概述: Black hurries back to the site of Ha-ram's disappearance. Crazy Dog gets hold of what appears to be a safe key belonging to Man-soo's father.
I Will Say Goodbye (集 15) 7.5
播出日期: 2017-12-02
运行时间: 85 min
概述: Shocked by the news report about his father, Man-soo asks to see Man-ho and demands to know the truth. Ha-ram's mother confronts Black.
The Revelations – All Things Are Connected (集 16) 7.5
播出日期: 2017-12-03
运行时间: 83 min
概述: By retracing Mu-gang's steps on the day he was shot, Black gathers clues into the whereabouts of a videotape that contains definitive evidence.
What If Kim Joon Is Alive? (集 17) 8.0
播出日期: 2017-12-09
运行时间: 86 min
概述: Black chases after leads that will help him solve Joon's case, which is still a mystery. Meanwhile, Ha-ram spots a shadow inside someone's body.
One Last Thing to Do (集 18) 8.0
播出日期: 2017-12-10
运行时间: 87 min
概述: Despite the urgent prodding from 416 and 007, Black becomes conflicted about whether to turn in the laptop as evidence.
季
集 18