This drama was as close to the book while retaining its own essence. People hating in attitude details in the last episode have obviously not read the novel and why it was added. I do wish his reason for going and disappearing was made same as the book because imo it had a stronger effect but still I loved how they wrapped up everything nicely. if you know the novel is pretty long and I was worried how it would be composed in only 12 episodes. I do love the drama a lot. Yoo Yeon suk will forever remain my favourite actors, he owns each character he portrays. The book however had a lot of things I found better than the drama. the reason for the car crash one of them. In A was the one who noticed that paek sa eon was different from when she saw him before. it’s she who they tried to kill. her brother wasn’t the target. Anyways the list of pros and cons between both the novel and the drama is too long. I loved them both individually. it’s a must watch drama. The chemistry is off the Charts.