While visiting his girlfriend Summer in Malibu, Teddy stumbles upon two mysteries involving a blown up whale explosion and a string of beach sand thefts, but his investigation is sidetracked by a rumor that his girlfriend is dating a celebrity, leading him to question their relationship.

Ages 8-12. Simon & Schuster Books for Young Readers.|||Grades 4-6. Simon & Schuster Books for Young Readers.|||adolescent

Stuart Gibbs.