meaning of "true-crime buffs"

[Floratang]

Sorry, true-crime buffs. One of history's greatest "murder" mysteries may have just been laid to rest.

Please explain the phrase "true-crime buffs" to me, thanks!

[Jamie (K)]

A buff is a fan or a hobbyist, so a car buff is a fan of cars, and a railroad buff is someone whose hobby it is to learn as much about railroads as possible.

A true-crime buff is someone who has the hobby of reading true crime books. True crime is a genre that even has its own shelf in American bookstores. They are journalistic accounts of crimes that have really happened, and they're more interesting than detective novels, because the people and the police work are real.

In North America there are also a lot of true-crime TV shows. One of the best is called "The Forensic Files". It shows how the police use various types of modern technology to solve crimes that would have been impossible to solve just a few years ago.