According to the FBI, around 51% of murders in 2021 were solved. So this is just a bit lower than the federal numbers. The number doesn’t shock me, I think solving a murder is very hard and technology can only offer so much more info. Proving murder beyond a doubt is also very difficult, like OJ. We all know he killed his ex wife and her boyfriend, but prosecutors couldn’t prove he did it within the court context. An “unsolved” murder that has a solution.