Culprit Hunt is a Manga/Manhwa/Manhua in english language, Crime series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.nl fastest updating comic site. The Summary is

Based on Mu Yunianhua’s novel of the same name, "The Killer", this adaptation mainly reflects the grass-roots police's abiding by ideals and beliefs, the belief that the truth will always be found, hard work, adherence to missions, and a pledge to protect the lives and property of the people.