There’s no denying that true crime makes for some of the best guilty pleasure programing — and now when you watch it, you can know that you’re doing your part to maybe make the world a slightly better place! The beloved true crime series Unsolved Mysteries has been on and off the air since 1987 — and while you’ve been getting your fix of some of the most bizarre cases relating to unsolved crimes, missing persons, conspiracy theories, and unexplained paranormal incidents, you may not have realized that watching the show has done a lot of good in the world!

Since the show first premiere in 1987, nearly 400 featured cases have gone on to be solved — often times, with the aid of the publicity garnered by the program and similar shows (as more publicized cases often overlapped with other popular true crime shows). Scroll through these mysteries are no longer unsolved in the gallery below!