While many Bloody Disgusting readers may have grown up alongside the J-horror craze and the several Ju-On/Grudge films, our younger readers may not know the story behind the franchise’s haunts: Kayako and Toshio.

“When someone dies in the grip of a terrible rage, they leave behind this grudge, this unanswered desire for vengeance and violence,” Producer Sam Raimi explains in this exclusive The Grudge featurette that features some previously released footage.

“This grudge can spread anywhere and everywhere,” adds Nicolas Pesce, who directed the newest installment.

In the previous featurette that shared similar interview bits, co-star Demian Bichir (The Nun) teased the possible introduction of a brand new cursed entity.

“This is a completely different entity, charged with its own personality and its own terror,” Bichir had said.

In our exclusive featurette below, we catch a glimpse at one of the haunts scaring Mandy star Andrea Riseborough, a detective investigating a serious of suspicious deaths all stemming from one house.

This is the explanation of the ghost that was provided to Bloody: “A manifestation of the grudge; once you’ve entered the house, the curse spreads and can take a variety of forms and consequences.”

Sam Raimi‘s latest production also features horror veteran Lin Shaye (Insidious) who exclaims, “This is a horror film. This is real horror.”

While we know that Junko Bailey plays Kayako in the next Grudge, we have no idea who this alleged new spirit is, who plays it, and how many there are. I guess we’ll find out on January 3, 2020.