Lou Costello The Time Between Dog and Wolf is the twilight hour when it becomes difficult to distinguish between good and evil, or friends from enemies. This series is a wise guy spy thriller of the first order. The script is tight and fast paced, the acting superb, and the photography is most excellent. The acting and character development for a very interesting grouping of supporting characters is excellent. One even begins to like the bad guy. Actor Lee Joon Ki's (Le Grand Chef, Sweet Spy) portrayal of the conflicted NIS (National Intelligence Service) agent Suhyun/Kay, a spy who finds himself accepted as a son by his gangland Triad boss is one to be remembered. This show is well populated with a host of very memorable and well developed characters. On location filming in Thailand and Korea adds considerably to the gritty underworld reality of the film. Directed by Jin Min Kim. The very good English subtitle work by David Bannon makes this film very watchable for the non Korean speaking viewer. This series is so good that I unreservedly recommended it most highly. If you enjoy superior quality viewing entertainment then this belongs in your collection.