Reddit reviews Battle Royale Ultimate Edition Volume 1 (v. 1)

BR is two movies & a manga series besides the book that started it all.

There's only one murder in Fishtown, but it's a true story and most/all? the details are correct.

edit: forgot Battle Royale

Not serial killers exactly, but very good.
>Forty-two ninth graders embark on what they think is a graduation camping trip. Unbeknownst to them, they've been taken to the practically deserted island of Okishima to serve as the next contestants on The Program, a state-sponsored reality tv show. The show's premise is simple, if terrifying: within three days the participants must kill each other until only one student remains.

If you love this movie, check out the Book or the Manga.
They are both really good.