Voice (Seasons 1–4)

Voice (보이스, 2017) is a Korean crime thriller series you can watch online on iFILM, directed by Nam Ki-hoon and Kim Hong-seon, starring Lee Jin-wook and Jang Hyuk. Detective Moo Jin-hyeok has been a wreck since a serial killer murdered his wife years ago. He drinks, he isolates, and he keeps hunting — unofficially, obsessively, alone.

Kang Kwon-joo was working an emergency dispatch line when her father, a police officer, became the killer's next victim. She listened to the call in real time and locked the sound of the killer's voice into memory. She spent years in the United States training as a voice profiling specialist, then came back with one purpose: find Moo Jin-hyeok, and finish what neither of them could finish alone.

The series is built on the premise that sound itself can be evidence — and it earns that premise scene by scene. Emergency call sequences carry real tension. The show does not waste time on subplots that do not serve the case. Stream all episodes of Voice (2017) on iFILM.