I don't have a lot to write about for this review, but I want to praise the cast's(both main and supporting roles) fastastic acting, I love how the twins were portrayed by one person perfectly, how the pervert was well acted out, of course, the enthusiatic and creepy landlord should not be forgotten too! Im Siwan and Lee Dongwook also portrayed their victim and villain roles really well, I can literally sense Jung U's fear and distrust, as well as getting goosebumps from Moonjo's psychotic smile and his crimes. The show had really dark vibes and some scenes are too disturbing to be watched while eating HAHA, nonetheless the cinematography of the show was pretty well done and Eden Goshiwon is really the last place on earth I want to visit if it exists lol. I agree with other comments about the loopholes existing in the shows, and one thing I wish to see is the characters' backstorys. Like what caused the twins to behave like this? How did the pervert join their killing plans, did he not get weirded out at first or is he naturally psychopathic? I'm very curious about how did Moonjo turn out to be a serial killer as well, also during the shower scenes in the earlier episodes, scars can be seen on Moonjo's back. Did he have a traumatic past that caused his personality to be like this? I want a season two featuring their past!! TT