Peter is thrilled that his Grandpa is coming to live with his family. That is, until Grandpa moves into Peter's room, forcing him upstairs into the creepy attic. And though he loves his Grandpa, he wants his room back - … Robert De Niro, Uma Thurman, Rob Riggle, Oakes Fegley, Laura Marano, Cheech Marin, Jane Seymour Added on HBO 2022-06-30. Added on Amazon Prime 2023-07-19. Youtube Trailer