Netflix's upcoming horror series, "The Haunting of Hill House," had a 100% critic score on Rotten Tomatoes as of Wednesday.

Critics have called the series "the first great horror TV show" and described it as "perfect Halloween bingeing."

The 10-episode first season comes to Netflix on October 12.

Netflix's upcoming horror series, "The Haunting of Hill House," doesn't drop on the streaming service until October 12, but already critics who have seen it are buzzing about it.

Netflix describes the series, based on the 1950s novel of the same name, as "flashing between past and present, a fractured family confronts haunting memories of their old home and the terrifying events that drove them from it." But fans shouldn't expect a direct adaptation, as critics have said the series is more of a reimagining.

The 10-episode first season is directed by Mike Flanagan, known for horror films like "Hush," "Before I Wake," "Ouija: Origin of Evil," and Netflix's "Gerald's Game." It stars Carla Gugino, who reunites with Flanagan and Netflix after starring in "Gerald's Game" last year.

The series had a 100% critic score on the review aggregator Rotten Tomatoes as of Wednesday. Though it's early and the score is based on just seven reviews, it's a promising start.

GQ's Tom Philip called "The Haunting of Hill House" the "first great horror TV show," even better than the likes of "Black Mirror" or "American Horror Story."

"It's not for the faint of heart, and it's f---ing fantastic," Philip wrote.

Forbes' Merrill Barr said the show is "out to scare and on that front, it succeeds from the get-go and makes for perfect Halloween bingeing along with everyone's various slasher movie marathons."

The one small but common criticism seems to be that the show builds slowly. Daniel D'Addario wrote for Variety that the show "doesn't immediately make a case for itself" but that it's "an effective scare-fest that is at its best when the tale does more than jolt the viewer."

Based on first reactions, "The Haunting of Hill House" is sure to keep viewers up at night.

Watch the chilling trailer below: