"Hollow City" is the second book in the Miss Peregrine's Peculiar Children series by Ransom Riggs. It continues the story of Jacob Portman and his friends as they navigate a world filled with peculiar children and dangerous creatures. The narrative follows their journey through a mysterious, abandoned city in search of safety and answers. The book combines elements of fantasy and adventure, featuring vintage photographs that enhance the storytelling. As the characters face various challenges, they uncover secrets about their past and the nature of their peculiar abilities, deepening the overall plot and character development.