On September 26, 2025, it was announced the series was renewed for a second season.[3]
Synopsis
Katherine, along with her children Ben and Esther, move into the Undervale Hotel, which was owned by her deceased brother Nathan. However, it is soon revealed that the place is haunted by the quirky restless spirits of the previous residents, including Nathan, who offers to help Katherine make the hotel's business successful. They later meet an immortal demon named Abaddon, who is trapped in the body of a young boy from the 1700s and offers to help the family fend off evil demons, murderers and other entities who come to Undervale.
Voice cast
Will Forte as Nathan,[4] Katherine's older brother who is a ghost. He tries to help out his sister around the hotel, whether it’s trying to get guest to stay, how to end curses, or fighting off evil spirits.
Eliza Coupe as Katherine,[4] the reluctant owner of the haunted Undervale Hotel in upstate New York and Nathan's younger sister.
Skyler Gisondo as Ben,[4] Katherine's young teen son and Nathan's nephew, who is socially awkward and tries to maintain some normality with his new life at the Undervale.
Natalie Palamides as Esther,[4] Katherine's daughter and Nathan's niece who enjoys using black magic and her new life at the Undervale.
Jimmi Simpson as Abaddon,[4] a demon who is trapped in a young boy's body from the 1700s.
The series premiered on Netflix on September 19, 2025.[2]
Reception
On Rotten Tomatoes, the series holds an approval rating of 75% based on 12 reviews.[5]Metacritic, which uses a weighted average, gave a score of 54 out of 100 based on 5 critics, indicating "mixed or average".[6]
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