From the mastermind behind Netflix's Kingdom, Kim Eun-Hee's Signal is an exhilarating series that seamlessly weaves together gripping crime thriller elements with an intriguing touch of supernatural. With its unique premise of a mysterious walkie-talkie that connects the past and the present, the show follows a team of detectives from different eras as they collaborate to solve cold cases and unravel the secrets behind unsolved crimes. The superb writing and exceptional performances by the cast, including Lee Je-hoon, Kim Hye-soo, and Cho Jin-Woong, have made Signal a major hit among K-Drama fans.