Crash Course in Romance will take a drastic turn from a feel-good romantic comedy to a serious thriller in the upcoming episode. The series revolves around Choi Chi-yeol (Jung Kyung-ho), a popular math teacher at a private institution, and Nam Haeng-seon (Jeon Do-yeon), who runs a banchan (side dish) shop.In episode 13, the series will deal more with the intentions of a serial killer, confrontations between Haeng-seon, Chi-yeol, and Dong-hui, the aftermath of leaked exam papers by Lee Sun-jae's mother, and Nam Hae-e being in potential danger.Crash Course in Romance episode 13 preview hints at Nam Hae-e being in dangerCrash Course in Romance fans have their minds full of the possible dangers their favorite characters might be in in the upcoming episode. It has taken an especially drastic turn after revealing Ji Dong-hui’s true identity as the serial killer in episode 12. Nam Hae-e, Nam Haeng-seon’s daughter, could be in danger in the upcoming episode.Episode 13’s preview showcases Haeng-seon and Choi Chi-yeol confronting Ji Dong-hui for his rough behavior. During that time, Lee Sun-jae’s mother also threatens Hae-e about exposing their secrets, as it could lead to many lives being destroyed. A distraught Hae-e is then seen walking alone at night and turning back, as if in reaction to a sound.lila 🍃@lovingIjyim so scared for haeyi things arent looking good, donghui will fail at hurting haengseon so he will target her loved ones #CrashCourseInRomanceEp12 #CrashCourseInRomanceEp136im so scared for haeyi things arent looking good, donghui will fail at hurting haengseon so he will target her loved ones😭😭😭 #CrashCourseInRomanceEp12 #CrashCourseInRomanceEp13 https://t.co/y6RflyCvLwHae-e's phone is also unreachable, as established by Chi-yeol, Young-joo, and Jae-woo, who are hurdled around a worried Haeng-seon trying to call Hae-e, but to no avail. It then seems clear that the serial killer has changed his target from mother to daughter.Furthermore, the teaser shows Hae-e and Sun-jae's mother having a private conversation in which the latter attempts to bury the secret of leaked exam papers. If the secret comes out, Hae-e and Sun-jae may face punishments and end up missing a crucial year in college.Jung Kyungho Philippines@jungkyunghoph[VID/TRANS] 230219 tvN drama Update[Ep.13 Preview] Suddenly, Haeyi disappeared!?Haeyi disappeared without a word and the truth behind of trusted Secretary Ji...?twitter.com/CJnDrama/statu…#JungKyungHo #정경호 #CrashCourseInRomance #일타스캔들tvN drama@CJnDrama[13화 예고] 갑자기 해이가 사라졌다!?말도 없이 사라진 해이와 믿었던 지실장의 실체는.....?<일타 스캔들> [토일] 밤 9:10 tvN 방송#일타스캔들 #CrashCourseinRomance#전도연 #정경호 #이봉련 #오의식 #신재하 #노윤서#tvN #스트리밍은TVING407155[13화 예고] 갑자기 해이가 사라졌다!?말도 없이 사라진 해이와 믿었던 지실장의 실체는.....?<일타 스캔들> [토일] 밤 9:10 tvN 방송#일타스캔들 #CrashCourseinRomance#전도연 #정경호 #이봉련 #오의식 #신재하 #노윤서#tvN #스트리밍은TVING https://t.co/L3KOa5XiyV[VID/TRANS] 230219 tvN drama Update[Ep.13 Preview] Suddenly, Haeyi disappeared!?Haeyi disappeared without a word and the truth behind of trusted Secretary Ji...?🔗twitter.com/CJnDrama/statu…#JungKyungHo #정경호 #CrashCourseInRomance #일타스캔들 https://t.co/HH1Z7OGVi0Dong-hui also seems to have moved on from targeting Haeng-seon. However, it is possible that he has decided to go for the next person who Haeng-seon loves the most—Hae-e, her niece/daughter. If he does, then it will be poetic justice in his eyes, as for him, Haeng-seon has stolen his beloved person, Chi-yeol.Fans react to the Crash Course in Romance episode 13 previewFans notably had varied reactions to the episode 13 preview, but the majority of them were concerned for Nam Hae-e. Among the many characters, Hae-e’s character arc will be developed the most in the upcoming episode of Crash Course in Romance as she has multiple things to take care of.As one fan pointed out, the episode 13 preview already has many “scared." This is also because Haeng-seon will finally confront Dong-hui about his cold reactions toward her. Unlike before, the latter will retaliate by showing his true colors.ᵕ̈@withdramasThis preview is telling enough with the fun and romance now let's get creepy..iam scared fr#CrashCourseInRomance#CrashCourseInRomanceEp12 #CrashCourseInRomanceEp13501118This preview is telling enough with the fun and romance now let's get creepy..iam scared fr#CrashCourseInRomance#CrashCourseInRomanceEp12 #CrashCourseInRomanceEp13https://t.co/62QTCfq4Iifairytale.@OrAveryI hope the history doesn't repeat itself, Haeyi realized she got the exam answers exactly the same with that incident of Donghui's sister. And please I hope she is safe, please don't be the target #CrashCourseInRomance twitter.com/withdramas/sta…ᵕ̈@withdramasThis preview is telling enough with the fun and romance now let's get creepy..iam scared fr#CrashCourseInRomance#CrashCourseInRomanceEp12 #CrashCourseInRomanceEp1332This preview is telling enough with the fun and romance now let's get creepy..iam scared fr#CrashCourseInRomance#CrashCourseInRomanceEp12 #CrashCourseInRomanceEp13https://t.co/62QTCfq4IiI hope the history doesn't repeat itself, Haeyi realized she got the exam answers exactly the same with that incident of Donghui's sister. And please I hope she is safe, please don't be the target 😭#CrashCourseInRomance twitter.com/withdramas/sta…sleepyhead⁷ (fan acc)@peachtaeri24THIS PREVIEW NEXT WEEK IM SCARED #CrashCourseInRomanceEp12#CrashCourseInRomanceEp13#CrashCourseInRomance 559THIS PREVIEW NEXT WEEK IM SCARED #CrashCourseInRomanceEp12#CrashCourseInRomanceEp13#CrashCourseInRomance https://t.co/o2SguYzz0i☘∆@__simba10i will never forgive ji dong hui if he ever hurts nam hae yi#CrashCourseInRomance #CrashCourseInRomanceEp133i will never forgive ji dong hui if he ever hurts nam hae yi😡#CrashCourseInRomance #CrashCourseInRomanceEp13https://t.co/3r6prV0endNang@KenangpngAisshhh I dun like #CrashCourseInRomanceEp13 previewAisshhh I dun like #CrashCourseInRomanceEp13 previewclfr_lh@hl_linhhaif anything happened to hae e imma throw hands bruhhh noooo twitter.com/cjndrama/statu…tvN drama@CJnDrama[13화 예고] 갑자기 해이가 사라졌다!?말도 없이 사라진 해이와 믿었던 지실장의 실체는.....?<일타 스캔들> [토일] 밤 9:10 tvN 방송#일타스캔들 #CrashCourseinRomance#전도연 #정경호 #이봉련 #오의식 #신재하 #노윤서#tvN #스트리밍은TVING407155[13화 예고] 갑자기 해이가 사라졌다!?말도 없이 사라진 해이와 믿었던 지실장의 실체는.....?<일타 스캔들> [토일] 밤 9:10 tvN 방송#일타스캔들 #CrashCourseinRomance#전도연 #정경호 #이봉련 #오의식 #신재하 #노윤서#tvN #스트리밍은TVING https://t.co/L3KOa5XiyVif anything happened to hae e imma throw hands bruhhh noooo twitter.com/cjndrama/statu…What happened to Nam Haeng-seon and Ji Dong-hui in episode 12?Episode 12 saw Chi-yeol and Haeng-seon's first fight over Dong-hui. While Haeng-seon had her doubts about Dong-hui behaving coldly towards her, Chi-yeol was blinded by his faith in him.Dong-hui's intentions towards Haeng-seon also became clear as he tried his best to keep Chi-yeol away from her by deleting messages and preponing schedules. Dong-hui also tried throwing Haeng-seon off the yacht when Chi-yeol wasn't watching. Towards the end, it was revealed that Dong-hui was indeed the serial killer and was aiming to kill Haeng-seon.Crash Course in Romance only has four more episodes left before it ends, but it has already proven to be a successful run. The series releases new episodes every week on Saturday and Sunday. Episode 13 will be available on February 25, 2023. The first 12 episodes are currently streaming on Netflix.