The 13 Treasures series by Michelle Harrison is a captivating fantasy trilogy that begins with the story of Tanya, a 13-year-old girl who can see fairies. However, these fairies are not the friendly kind—they are mischievous and often malevolent, causing Tanya significant trouble. After an incident, Tanya is sent to live with her strict grandmother at the mysterious Elvesden Manor. At the manor, Tanya uncovers secrets about her family, the manor’s history, and the disappearance of a girl named Morwenna Bloom decades earlier. Alongside Fabian, the groundskeeper’s son, and Red, a girl with her own connection to the fairy world, Tanya embarks on a dangerous journey to solve the mystery. There is a prequel to the trilogy, called One Wish, which takes place before the original series. The age rating for this series is 10+.