tvN’s drama series “Signal” registered viewer ratings of 9.5 percent on Friday.

The viewership decreased by 0.9 percentage points to 8.6 percent for Saturday’s episode, but it still remains the most-watched program, beating other competitors in the same time.

(Osen)

Actress Kim Hye-soo, actor Cho Jin-woong and Lee Je-hoon star as three investigators who work on unsolved cases.

A two-way radio bridges the past and present, and Lee (Park Hae-young) and Cho (Lee Jae-han) help each other to solve problems.

The criminal case in this drama is inspired by a true case that occurred in Hwaseong, Gyeonggi Province.

It is broadcast every Friday and Saturday at 8:30 p.m.

By Kim Soo-hyang (shkim@heraldcorp.com)