# Who's the Keyman

Who's the Keyman (simplified Chinese: 我是大侦探; traditional Chinese: 我是大偵探; pinyin: Wǒ Shì Dà Zhēntàn) is a Chinese variety show produced by Hunan Television and Mango TV. The show features the main cast of He Jiong, Deng Lun, as well as resident guests Han Xue, Wowkie Zhang, Ma Sichun and Leo Wu.
The show is a remade version of Who's the Murderer.

## Format

In a prologue, the cast is introduced to the settings and suspects of a crime case for the new episode. The cast then chooses their role in the episode, as a particular suspect or the detective. Other than the detective, each person is given detailed information about the suspect they are portraying including their personalities, alibi, relationship to the victim and other suspects, history, criminal motive, etc. Every suspect can conceal information until explicitly questioned by other suspects or the detective, but only the keyman can lie. The gold keys are given to the cast members beforehand. If they vote correctly, they can keep the gold key. If not, they will have to return it.
* Alibi: Each player introduces themselves as the suspect they are portraying, gives some background information about their relationship with the victim, and describes their whereabouts before, during and after the crime.
* On-Site Investigation: The players are separated into three teams, and given ten minutes to investigate the crime scene for clues. Each player is given a mobile phone, and is allowed to take a maximum of ten pictures.
* Briefing: All players present the evidence they have collected, and are allowed to ask other players questions concerning evidence. Each player voices out who they currently think is the keyman after their briefing.
* First Keyman Vote: The detective is allowed to make a vote on who he/she suspects after hearing each player's briefing. The vote is made secretly to all of the players.
* Additional On-Site Investigation: All the players gather at the crime scene for additional investigation and discussion. This segment is run at the same time as the 1-on-1 Interrogation.
* 1-on-1 Interrogation: The detective who is always innocent can summon the other players into the interrogation room for further questionings.
* Final Keyman Vote: After all of the players have been interrogated, the game proceeds to the final vote. All players makes their final statement and debriefing of the case would be conducted by the detective. 5 minutes of individual investigations would be permitted before each player secretly votes for who they think is the final keyman. The player who receives the most votes is arrested. If the right suspect is voted as the keyman, only those who voted correctly get to keep their gold keys. Detectives who vote correctly both times gets two gold keys. Suspects who successfully hides their identity gets one gold key.
In the final episode, all six cast members are detectives, and the keyman is hidden in the non-player characters. The players are separated into two teams, and the first two players with the higher number of gold keys are the team leaders. The two leaders will have to make a reasoning according to the conditions and clues, and they will help to identify the keyman. If the keyman is identified, each player will be awarded a gold key. Meanwhile, a gold key box is hidden in somewhere, the player who opens it will be awarded an additional gold key. The player who obtain the highest number of gold keys will be titled as "The Best Detective" (Chinese: 全能推理王).

## Main cast

| Name | Profession | Date of birth | Appearance |
| He Jiong | Host, actor | (1974-04-28) April 28, 1974 (age 50) | Episode 1–13 |
| Deng Lun | Actor | (1992-10-21) October 21, 1992 (age 31) | Episode 1–13 |

## Recurring cast

| Name | Profession | Date of birth | Appearance |
| Han Xue | Singer, actress | (1983-01-11) January 11, 1983 (age 41) | Episode 1, 3–6 |
| Wowkie Zhang | Singer, host | (1983-08-31) August 31, 1983 (age 41) | Episode 2–6, 9–10, 12–13 |
| Ma Sichun | Actress | (1988-03-14) March 14, 1988 (age 36) | Episode 2–13 |
| Leo Wu | Actor | (1999-12-26) December 26, 1999 (age 24) | Episode 1–6, 9–13 |

## Episodes

| Episode # | Broadcast Date | Guest(s) | Case Briefing | Keyman | Results |
| 1 | 24 March 2018 | Zhang Ruoyun, Zhang Tian'ai | An Inn Background: The kids of Jia were missing Detective: Zhang Ruoyun He Loneliness: He Jiong Deng Cool: Deng Lun Waiter Lei: Leo Wu Xue Wuqing: Han Xue Customer Zhang: Zhang Ruoyun General Ai: Zhang Tian'ai | Leo Wu | Keyman won Arrested: He Jiong (He Loneliness) |
| 2 | 31 March 2018 | Zhang Ruoyun | Meeting in 1998 Background: Mr. Zhen was attacked Detective: He Jiong Director He: He Jiong Lun Ba: Deng Lun Zhen Chun: Ma Sichun Lei Haowa: Leo Wu Big Qiaqia: Wowkie Zhang Zhang Kuang: Zhang Ruoyun | Wowkie Zhang | Cast won |
| 3 | 7 April 2018 | — | Mysterious Museum: Part 1 Background: The Heart of Malan was stolen Detective: Wowkie Zhang He Dazui: He Jiong Deng Youwei: Deng Lun Ma Shangyan: Ma Sichun Lei Xiuxiu: Leo Wu Da Baobei: Wowkie Zhang Xue Xiaoxiao: Han Xue | Han Xue | Cast won |
| 4 | 14 April 2018 | — | Mysterious Museum: Part 2 Background: The Penglai Fairyland was destroyed He Dazui: He Jiong Deng Youwei: Deng Lun Ma Shangyan: Ma Sichun Lei Xiuxiu: Leo Wu Da Baobei: Wowkie Zhang Xue Xiaoxiao: Han Xue | Han Xue | Cast won |
| 5 | 21 April 2018 | — | Mysterious Resort: Part 1 Background: Security Zhen was attacked Detective: Leo Wu He Shouwu: He Jiong Deng Xingao: Deng Lun Ma Daha: Ma Sichun Lei Haobang: Leo Wu Da Maha: Wowkie Zhang Xue Gao: Han Xue | Ma Sichun | Keyman won Arrested: He Jiong (He Shouwu) |
| 6 | 29 April 2018 | — | Mysterious Resort: Part 2 Background: Zhen Ai was attacked Detective: Han Xue He Shouwu: He Jiong Deng Xingao: Deng Lun Ma Daha: Ma Sichun Lei Haobang: Leo Wu Da Maha: Wowkie Zhang Xue Gao: Han Xue | Deng Lun | Keyman won Arrested: He Jiong (He Shouwu) |
| 7 | 5 May 2018 | Wei Daxun, Bai Jingting, Yang Mi | Unable to Get out of the Old Mansion: Part 1 Background: Zhen Xin was attacked Detective: Deng Lun He Kuaile: He Jiong Deng Dadan: Deng Lun Assistant Ma: Ma Sichun Wei Le'ai: Wei Daxun Bai Mengxiang: Bai Jingting Mi Yue: Yang Mi | Wei Daxun | Keyman won Arrested: He Jiong (He Kuaile) |
| 8 | 12 May 2018 | Wei Daxun, Bai Jingting, Yang Mi | Unable to Get out of the Old Mansion: Part 2 Background: Zhen Xin was attacked Detective: Wei Daxun He Kuaile: He Jiong Deng Dadan: Deng Lun Assistant Ma: Ma Sichun Wei Le'ai: Wei Daxun Bai Mengxiang: Bai Jingting Mi Yue: Yang Mi | Helper: Yang Mi Keyman: Ma Sichun The first episode to involve two keymen. | Cast won |
| 9 | 19 May 2018 | Huang Lei | Adventure in the Faraway Town: Part 1 Background: Zhen Siba was fainted Detective: He Jiong He Bi: He Jiong Lun Bi: Deng Lun Ma Lanshan: Ma Sichun Wu Yu: Leo Wu Da Guangquan: Wowkie Zhang Huang Dou: Huang Lei | Leo Wu | Cast won |
| 10 | 26 May 2018 | Huang Lei | Adventure in the Faraway Town: Part 2 Background: Zhen Xiang was kidnapped Detective: Ma Sichun He Bi: He Jiong Lun Bi: Deng Lun Ma Lanshan: Ma Sichun Wu Yu: Leo Wu Da Guangquan: Wowkie Zhang Huang Dou: Huang Lei | Deng Lun | Cast won |
| 11 | 2 June 2018 | Zhang Ruoyun, Kenny Lin | Ten Years After Graduction Background: Zhen Keai was attacked Detective: Leo Wu He Menmian: He Jiong Deng Youxi: Deng Lun Ma Touqin: Ma Sichun Zhang Tiemo: Zhang Ruoyun Lin Ke: Kenny Lin | Ma Sichun | Cast won |
| 12 | 9 June 2018 | Zhang Ruoyun | Wrap Battle: Part 1 & 2 Background: Various cases Detectives: Team Deng Lun (Leo Wu, Zhang Ruoyun), Team Ma Sichun (He Jiong, Wowkie Zhang) Lady Han / Tutor Han / Waitress Han: Angela Chang Cousin Fei: Ariel Li Steward: Kido Ma Assistant Liu: Liu Xuequan Tutor Jin: Jin Jing Trainee Wei: Wei Xun Trainee Jiang: Jiang Yu Gao Xing: Chen Xiang Gao Ya: Lu Shan | Kido Ma, Jin Jing, Chen Xiang | Team Deng won in Scenario 1 Arrested by Team Ma: Liu Xuequan (Assistant Liu)Team Ma won in Scenario 2 Arrested by Team Deng: Wei Xun (Trainee Wei)Cast won in Scenario 3The Best Detective: Deng Lun |
| 13 | 16 June 2018 | Zhang Ruoyun | Wrap Battle: Part 1 & 2 Background: Various cases Detectives: Team Deng Lun (Leo Wu, Zhang Ruoyun), Team Ma Sichun (He Jiong, Wowkie Zhang) Lady Han / Tutor Han / Waitress Han: Angela Chang Cousin Fei: Ariel Li Steward: Kido Ma Assistant Liu: Liu Xuequan Tutor Jin: Jin Jing Trainee Wei: Wei Xun Trainee Jiang: Jiang Yu Gao Xing: Chen Xiang Gao Ya: Lu Shan | Kido Ma, Jin Jing, Chen Xiang | Team Deng won in Scenario 1 Arrested by Team Ma: Liu Xuequan (Assistant Liu)Team Ma won in Scenario 2 Arrested by Team Deng: Wei Xun (Trainee Wei)Cast won in Scenario 3The Best Detective: Deng Lun |

## Ratings

China Hunan Television premiere ratings :
| Episode | Date | CSM52 | CSM52 | CSM52 | CSM national network | CSM national network | CSM national network |
| Episode | Date | Rating | Share | Ranking | Rating | Share | Ranking |
| 1 | March 24, 2018 | 0.905 | 5.85 | 4 | 0.83 | 6.3 | 1 |
| 2 | March 31, 2018 | 0.955 | 6.34 | 2 | 0.65 | 5.26 | 1 |
| 3 | April 7, 2018 | 0.519 | 4.27 | 5 | 0.31 | 3.05 | 1 |
| 4 | April 14, 2018 | 0.812 | 5.55 | 4 | 0.64 | 4.98 | 1 |
| 5 | April 21, 2018 | 0.826 | 5.59 | 4 | 0.63 | 5.16 | 1 |
| 6 | April 29, 2018 | 0.607 | 4.24 | 8 | 0.68 | 5.38 | 1 |
| 7 | May 5, 2018 | 0.814 | 5.16 | 5 | 0.78 | 5.81 | 1 |
| 8 | May 12, 2018 | 0.808 | 5.65 | 7 | 0.84 | 6.9 | 1 |
| 9 | May 19, 2018 | 0.923 | 6.85 | 4 | 0.68 | 5.91 | 1 |
| 10 | May 26, 2018 | 0.758 | 5.61 | 7 | 0.65 | 5.61 | 1 |
| 11 | June 2, 2018 | 0.788 | 5.54 | 10 | 0.8 | 6.56 | 1 |
| 12 | June 9, 2018 | 0.894 | 6.02 | 6 | 0.87 | 6.61 | 1 |
| 13 | June 16, 2018 | 0.667 | 3.35 | 5 | 0.66 | 4.08 | 1 |
* The data determined by CSM.
* Ratings ranked above not including CCTV.
* Information source: 卫视这些事儿, 卫视小露电, TV未知数.