If you enjoyed watching the American TV show "Mindhunter," you'll definitely want to check out "Through the Darkness," a compelling Korean crime thriller. The TV series is based on a true story recounted in a book co-authored by Ko Na Moo, a writer, and Kwon Il Yong, a criminal profiler. It follows the story of South Korea's very first criminal profiler, who faced a challenging mission. This profiler had to track down serial killers who were causing chaos with a series of seemingly random and gruesome murders across the country. Looking for more awesome scary K-dramas? Click here. Possible spoilers