This revenge plot drama was 50 episodes long, but it would have been more effective with 30 episodes.

Story 6.0
 It started out as a crime drama, but evolved midway into a melodrama. At some point, it felt as if the director, scriptwriter and actors played 'spin the bottle' to determine which character would gain the advantage at the end of the day.

Acting Cast 6.0
Mediocre acting by the leads! The best acting performance was given by Jung Bo-Suk as Byun Il-Jae, the despicable villain.

Music 6.5
Music was above average.

Rewatch value 1
The value should be 0. It is only rewatchable if 20 hours are shaved off the drama, and the final scene rewritten and reshot.

Overall 5
The drama title should have been "Monster Byun Il-Jae",  with deference given to Jung Bo-Suk. Byun did all the menacing and plotting, and was the real Monster.