This is a worth to watch. In terms of storyline, shots, editing, and selection of cast. It shows a different dimension between each roles's perspective in deducing the culprit. The shot cue between shots also trying to tell between each person within the same event timing, so it's very fast paced. Sung-min here is really a good actor, the look of him knowing the fact he knows the culprit but are forced to maintain silent for the protection of his family.

The ending is perfect, as it packages the whole concept of what is considered a safe neighbourhood. Will you want a neighbourhood, where all the homes are busy with their activities or someone whom will still keep a lookout of their surrounding in case of something happens. Which creates the irony, what is a safe neighbourhood, is a quiet and serene place; a safe place?