2nd book in the 1-800-Where-R-You series. Also published under the author name Meg Cabot.
In Book 2 of the series, Jess Mastriani tries to have a normal summer by working at a camp for musical prodegies. She was struck by lightning in the first book and developed ESP regarding missing children. She tries to convince the FBI that she has lost her powers, while anonymously reporting the whereabouts of missing children. This was a fast-paced interesting book.