Korean Drama '' A Killer Paradox '' is an edgy drama that explores the morality of murder, when the victim is a killer themselves.

The drama does a great job presenting the main character's journey from guilt, remorse, fear, and acceptance. On that front, the drama escapes from the basic crime dramas and gives its main lead a more humane act.

On the other hand, the rest of the characters weren't as deeply explored. They were left as cells of their descriptions and nothing beyond.

Also, the story, though initially impressive, failed to keep the momentum. The cinematography was enjoyable and original, yes, but, in the end, left a lot of things unsaid, as the shift from one scene to another had a few moments playing off-camera. This technique was nice at first but got tiring in the end.

Also, the sci fi element wasn't explored at all and it was left as a thought.

Finally, the performances were all enjoyable and the relationship between the characters was sweet.

So, overall, six out of ten.