In "Big Mouth" episode 6, Go Mi Ho (YoonA) doubted her husband Park Chang Ho (Lee Jong Suk) and threatened him to end their relationship if he didn't tell the truth about his identity. Mi Ho also received a tip where Seo Jae Young's papers were hidden.

'Big Mouth' Episode 6: Go Mi Ho Visits Park Chang Ho in Prison

Gucheon Hospital's medical staff are designated to do volunteer work at the Gucheon Prison. After knowing that his wife came to visit him, Park Chang Ho got excited to reunite with his wife.

After grooming himself, he finally faced Mi Ho. But she went straight to the point and asked him about what was going on and why was everyone calling him Big Mouse. She told him that if he lied, it would be over between them. Since the rooms were under surveillance, they went out to talk. Warden Park seemed disappointed for not hearing the couple's conversation.

Park Chang Ho got honest with his wife and mentioned what really happened between him and the real Big Mouse. After he received the drug list from Mayor Choi, strange things happened, and someone started sending him messages by card about his plans.

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After she heard his statement, she felt relieved that her husband was just faking it to know more about Seo Jae Young's case - and use the opportunity to trap and catch who the notorious conman really is.

Go Mi Ho Secures Seo Jae Young's Document

While busy working at the Gucheon Hospital and looking at how to help Chang Ho, Go Mi Ho received a tip about Seo Jae Young's document. Kim Kyung Sook called her and suggested a deal.

She promised to give strong information about where to find the document in exchange for money. They managed to close the deal, but it was at that moment someone fell in front of Mi Ho from the rooftop of Gucheon Hospital. She ran inside the building and informed her about the incident.

She visited Hyun Joo Hee (Ok Ja Yeon) and told her about the murder that happened outside the building. Mi Ho also confronted her and mentioned that before Kyung Sook fell. She told her that Seo Jae Young's document was inside Hyun Joo Hee's necklace.

Joo Hee handed her the necklace, but it didn't open. Mi Ho apologized. Jang Hye Jin (Hong Ji Hee) overheard their conversation.

In the next clip, Seo Jae Young's papers landed on Go Mi Ho's hand, after Jang Hye Jin handed them to her. The lady confessed she had an affair with Seo Jae Young after saving her from manipulative husband Han Jae Ho, one of the VIPs.

Seo Ja Young gave her that necklace where the document was hidden.

IN CASE YOU MISSED IT: 'Big Mouth' Episode 5: Lee Jong Suk Gains Power After Revealing Himself as 'Big Mouse'

Have you watched "Big Mouth" episode 6? How's the story so far? Share your thoughts with us in the comments!

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Shai Collins wrote this.