Voice

Moo Jin-hyuk (Jang Hyuk) is a "mad dog" detective who becomes guilt-ridden after his wife was murdered while he was at work. Kang Kwon-joo (Lee Ha-na) is a tough policewoman who is gifted with perfect psycho-acoustics skills and went for voice profiling. She was working at the call center when a brutal murder case took place and in the process of investigating, her father was killed. Three years later, Jin-hyuk and Kwon-joo team up as the "Golden Time team" and solve cases together, chasing after the serial killer who took their loved ones. [About] Voice is a South Korean television series starring Lee Ha-na, Jang Hyuk, Lee Jin-wook and Song Seung-heon which follows the lives of 112 emergency call center employees as they fight against crimes using the sounds that they hear. It premiered on OCN on January 14, 2017. The first season concluded on March 12. The second season aired from August 11 to September 16, 2018. The third season aired from May 11 to June 30, 2019. Fourth season is scheduled to premiere on June 18, 2021 and it will air on every Friday and Saturday at 22:50 KST on tvN. [Source: Wikipedia]