: J.A. White has continued the series with a sequel titled Gravebooks [37].
: Features "creepy-crawly" monsters (Shredders), supernatural injuries, and themes of kidnapping and cannibalism [2, 13]. Reviewers from Common Sense Media suggest it may be too intense for children under 10 [8]. Nightbooks
: Strong focus on self-acceptance ("stay weird"), the importance of friendship, and the power of storytelling [12, 14]. Reader/Viewer Resources the importance of friendship
: Together, they navigate the apartment's magical library and gardens to find a way back to the real world before their time runs out [13, 26]. Parents' Guide & Content Info and the power of storytelling [12