Rupert Manor is a sprawling estate located in Northern California. It is the secluded residence of Rupert DeMillbrook, a mysterious trillionaire and the adoptive father of Angie, the story’s protagonist.  

The manor is described as a huge and lonely place, with numerous rooms and corridors. It is equipped with state-of-the-art technology, including extensive security systems and monitoring cameras throughout the house. The manor also has a basement, which is off-limits to Angie and Heidi, and is rumored to contain Rupert’s secret “skunk works” where he conducts his clandestine experiments.  

The atmosphere of Rupert Manor is one of isolation and secrecy. Angie feels like a prisoner in the grand estate, constantly watched and monitored by Rupert’s security team. The manor’s vastness and emptiness create a sense of unease, and Angie feels disconnected from the outside world within its walls.  

Rupert Manor is more than just a dwelling; it is a symbol of Rupert’s wealth and power, and a reflection of his enigmatic and secretive nature. The manor’s imposing presence and its atmosphere of isolation and surveillance contribute to the story’s overall sense of mystery and suspense.