Vanishing Acts (Leslie Margolis)

Summary: When a movie starring tween heartthrob Seth Ryan starts filming in Maggie's neighborhood, everyone gets movie mania.  Maggie manages to capture Seth's attention, but then he disappears!  Everyone thinks he's been kidnapped, but Maggie knows better.  She's on the case before anyone can yell, "Action!"  (from amazon.com)

Where can I find it?: Open eBooks app

Tags: Missing persons; Twins; Brothers and sisters; Junior high schools; Schools; Dogs; Detective and mystery stories; Children's stories