Loved this drama! This is one of the better tightly written Korean drama about bending time. The episodes were tense and fast paced and will keep at the edge of your seats. The time bending rules were mostly consistent all through out the show. If there were any plotholes these were very trivial. I may not like every character's decisions, esp Aeri's mom but it was understandable. Terrific acting from the entire cast! They were so good, esp Shin Seung Rok and Lee Se Young. I loved their team work and how they were able to beat the odds and find out the truth. The ending was satisfying, as the show was able to wrap their stories neatly except for 2 people, i wanted their ending to be different, but it was still fine. Definitely should be in everyone's watch list!