I’m pretty sure it was in either Korean, Chinese, or Japanese, it was an actual movie, and the graphics were either this year or only a couple years back. All I remember is that the movie starts with a little girl screaming and commuting suicide with a handgun. Then I remember something about a detective hanging himself(not actually dying)dying to test some sort of strangulation theory he had. I also remember a man, his wife, and something to do with a cuckoo clock mechanism with either a poison dart or gun inside. Please help me I appreciate any answers.