The Mystery Kiss — Elaine Harper

Polly Anderson was famous as a fortune teller; she had been doing it ever since grade school. When she moved to a California high school, she started telling fortunes again and soon won many new friends that way. Sometimes she told them about the future; at other times they told her secrets that they had never before told anyone.
How was it then that the spirits wouldn't or couldn't tell her who had stolen that electrifying kiss from her on Halloween night?