Netflix's original series Mindhunter may have only premiered earlier this month, but director David Fincher is already planning ahead.

The nail-biting (and binge-worthy) series is based on the real life tale of the FBI's research into the psychology of murder - in particular, serial killers. FBI Agents Holden Ford and partner Bill Tench delve deep into the minds of some of the United States' most infamous killers in hopes of learned what makes them tick. The initial 10-epsiode run left fans wondering what they could have in store for season two, with many speculating that the BTK Killer, real name Dennis Rader, could feature. But thanks to David Fincher, now we've got our answer as to what Agents Ford and Tench will be investigating. Fincher explained to Billboard that a potential second season would be focusing on the Atlanta Child Murders, as he revealed the direction the music would go in. He said:

“Next year we’re looking at the Atlanta child murders, so we’ll have a lot more African-American music which will be nice. "The music will evolve. "It’s intended to support what’s happening with the show and for the show to evolve radically between seasons.”

But since season one was more episodic and didn't have an overriding mystery, it may mean the the Atlanta investigation won't be the sole focus of season two. The Atlanta child murders were a killing spree which happened between 1979 and 1981. 28 African American kids, teens and adults were killed, while 23-year-old Wayne Williams eventually convicted for two of the murders.