Jaechan and Hongjoo meet before the situation becomes irreversible. Before things get ugly, Jaechan gets to Seungwon, and Hongjoo improvises so that things turn out differently from her dream. Jaechan tells Seungwon to stay out of trouble, but they only drift apart more.

Jaechan gets shot by Soogyeong’s father, Yoo Manho, and gets transferred to a hospital. Hongjoo receives a note that Jaechan sent to her before the accident and realizes that they’ve known each other for over 13 years.

After the arson, Criminal Division Three is swamped with work. Son Woojoo and Shin Heemin look into the arson case, and Lee Jigwang and Jaechan reinvestigate the IV drip serial murder case. Hongjoo also begins to look into the case. Meanwhile, Yoobeom receives a mysterious text message from the real killer.

After the arson, Criminal Division Three is swamped with work. Son Woojoo and Shin Heemin look into the arson case, and Lee Jigwang and Jaechan reinvestigate the IV drip serial murder case. Hongjoo also begins to look into the case. Meanwhile, Yoobeom receives a mysterious text message from the real killer.