Jennifer Allison. Gilda Joyce, Psychic Investigator (2005) 321 pp. [juvenile]
During the summer before ninth grade, intrepid Gilda Joyce invites herself to the San Francisco mansion of distant cousin Lester Splinter and his thirteen-year-old daughter, where she uses her purported psychic abilities and detective skills to solve the mystery of the mansions boarded-up tower.
Setting: San Francisco