Episode 4
Show: Big Mouth --> Season: 1 - Season 1
AirDate: 8/6/2022
Runtime: 68
Voting: 10 (1)

Overview: Is Changho really Big Mouse? Gong Jihoon makes a bet with Changho to find out his true identity.
Park Jeong-bok
prisoner 5362
Heo Woong
[Prisoner 1002]
Jin Mo
[Prisoner 6678]
Lee Young-jin
Choi Man Ho
Han Gi-joong
Kim Gap Joo [Secretary general]
Ma Jeong-pil
[Doctor]
Kim Bum-suk
[Detective]
Kim Won-suk
[Detective]
Shin Dong-eun
[Prison doctor]
Kim Mi-ra
[Patient's guardian]