In the beginning I thought it was good, but then after the third episode all the original cast just disappears and its a weird plot hole, it would've been amazing if the first three episodes were stretched longer so it could have more of a plot and make the last three episodes a second season. The entire thing just seemed very empty. I didnt enjoy it during the middle but towards the end it was good to me again. Kim Hyunjoo, Ryu Kyungsoo, Kim Siha and Choi Hyungjoo definitely saved this drama for acting and their characters were the easiest for me to watch. I thought I'd be upset that this was so short (only about 5 hours for all 6 episodes) but I'm happy it isn't longer. The plot twist towards the end just has me confused and nothing will ever come out of it but it felt like the director was too lazy to do anything else. I do like cult type dramas and mystery but save your time and just watch something else.