The initial thrill and mystery was all exciting, to track back all the steps up to her husband ,what was he working on before he left or why was he suddenly seen at a different location days after his alleged disappearance. But as with most shows, midway through it lost its track and started making up unnecessary back stories of all characters. The ending picked up some of the pace back and tie up the loose ends but still made little logic to the Characters drastic decisions. Okay for one time watch and Lee Min Ki fans (Like me)