A teaser for Season 2 (above) states, "We need to talk to more subjects", so it certainly sounds like we'll meet some new characters.
Next year we're looking at the Atlanta child murders, so we'll have a lot more African-American music which will be nice.
In case you haven't been addicted to the serial-killer drama, the first series was set in the late 1970s as we followed two Federal Bureau of Investigation agents that expanded criminal science by delving into the psychology of murder and getting uneasily close to all-too-real monsters.
The series opened to critical acclaim, and it now has a 95% on Rotten Tomatoes. Season one debuted October 13.
The announcement came just a few hours after Netflix detailed "A Korean Odyssey", a new TV series from director Park Hong-Kyun of The Greatest Love and by the Hong sisters (Hong Mi-Ran, Hong Jung-Eun), the writers of Master's Sun.
Fincher, who also directed four episodes, has his other hit Netflix series, "House of Cards", on hiatus since the revelations of star Kevin Spacey's inappropriate behavoir.
The show, which was created by Joe Penhall with David Fincher and Charlize Theron on board as producers, is based on the true crime book Mindhunter: Inside the FBI's Elite Serial Crime Unit by John E. Douglas and Mark Olshaker. It will arrive on Netflix this December.