True Crime is a genre as old as Cain and Able. OK, maybe not that old, but it’s pretty close.
The True Crime genre is a non-fiction book, magazine, pulp, podcast, movie, or TV series that examines an actual crime and details the actions of real people associated with and affected by criminal events. Murder is the crime most focused on and Serial Killers make up 40% of the True Crime genre.
Today, True Crime is not only the most in demand type of documentary, but it also almost doubles the Science documentary which is number 2 on the list.
https://en.wikipedia.org/wiki/In_Cold_Blood
https://en.wikipedia.org/wiki/Helter_Skelter_(book)
https://en.wikipedia.org/wiki/The_Stranger_Beside_Me
https://en.wikipedia.org/wiki/The_Thin_Blue_Line_(1988_film)
https://en.wikipedia.org/wiki/Paradise_Lost:_The_Child_Murders_at_Robin_Hood_Hills