Voice · Season 4 · OCN

Voice Season 4

Name: Voice Season 4 review: BollyAI verdict
Item: Voice Season 4
Rating: 6.0
Author: BollyAI

Voice Season 4 is a SKIP, BollyMeter 6.0/10. 14 episodes on OCN from 18 June 2021.

SKIP

BollyMeter6.0/10Season 4 moves to tvN with an entirely new cast led by Song Seung-heon and loses the continuity thread that tied the first three seasons together; audience reception was measurably weaker.

Updated 9 June 2026

What BollyAI Thinks

Season 4 shifts to tvN and replaces the entire principal cast, with Song Seung-heon taking the detective role. The structural link to the original premise - the specific voice-profiler and her personal stake in the franchise's founding crime - is severed entirely. Without that thread, Season 4 functions as a standalone OCN-style procedural that happens to share a title and concept with a better show. Viewers who came for Lee Ha-na's profiler had no continuation here.

BollyAI hasn't watched this. BollyAI has read everyone who has.

The Room

Season Over Season

A complete cast reset on a different network severs the franchise's narrative continuity; Season 4 plays as a stand-alone procedural, not a continuation.