Abyss S1:E4

The Reason to Live, the Reason to Save Someone

After getting alarming news from his fiancee, Cha Min has a mishap and receives an object called Abyss. Go Se-yeon meets someone who says that he is a friend.

Neither the Living nor the Dead

Min explains what he did to Se-yeon, who is in disbelief over her circumstances. Vowing to find her killer, she comes up with a way to help Min and herself.

The Truth Hidden by the Facts

Se-yeon and Min are stunned by what Park Gi-man has been doing, and they unwittingly get help from a police detective who thinks that she is someone else.

Murderer vs Revived

After making a horrific discovery, Se-yeon considers using Abyss and tries to persuade Park Dong-cheol to keep investigating the murder of the prosecutor.

Twist: Sudden Turn of Fate

Park Dong-cheol tries to hunt down Oh Yeong-cheol, who keeps eluding the police. Min's mother doesn't know what to make of the changes she sees in her son.

Accomplice, and the Real Culprit

Se-yeon finds herself viewing Min in a different light after realizing he has always been by her side. Jang Hui-jin reveals something surprising to Min.

Trap

Park Dong-cheol demands to know why Se-yeon interferes with the case. Someone claiming to be Lee Mi-do appears out of nowhere.

Unrequited Love Strikes Again

Se-yeon tries to explain her actions to Min and has an emotional reunion with her mother. Hui-jin refuses to back down upon being confronted by Min's mother.

Trail of Powder

Se-yeon gets a feeling that she may be in danger, Min reveals a secret about his father, and Hui-jin's mother becomes agitated after seeing someone on the television.

Hide and Seek

After Park Dong-cheol alerts him about Oh Yeong-cheol, Min goes looking for Se-yeon. Lee Mi-do's parents get a perplexing proposal from Min's mother.

The Moment of Evil

Se-yeon senses something unnerving about Seo Ji-uk; Hui-jin gets an unexpected visitor and has an idea about what Oh Yeong-cheol could be planning to do.

Before the Storm

While attempting to help Park Gi-man with a case, Se-yeon and Min discover something strange. Seo Ji-uk gets a visitor.

Rabbit Sheep

Seo Ji-uk puts his plan in motion. On the way to meet Se-yeon, Min receives a disturbing call from Park Dong-cheol and struggles with a difficult decision.

Wanted

Min and Se-yeon set out to acquire evidence against Seo Ji-uk, with Park Dong-cheol's help. Min's mother questions Se-yeon about her intentions.

The Way Home

After proposing to Min, Se-yeon copes with the consequences of his sacrifice and reveals the truth to her parents. Seo Ji-uk's trial begins.