"The Mediator" is a young adult fantasy series written by Meg Cabot. It follows the story of Suze Simon, a teenage girl who can see and communicate with ghosts. After moving to California, she discovers her new home is haunted, and she must help the spirits find peace while navigating her own challenges. The series blends elements of romance, humor, and supernatural themes. As a mediator, Suze balances her responsibilities to the living and the dead, often facing conflicts that test her abilities and relationships. The books explore themes of friendship, love, and the importance of resolving unfinished business.