Behind the Curtain book by Peter Abrahams

Things are amiss at 99 Maple Lane. Ingrid's dad's job is in jeopardy and her brother, Ty, is getting buff—really buff—but his moodiness is making Ingrid start to wonder . . . Meanwhile, Ingrid's beloved soccer coach is replaced by an icy newcomer who seems a little too savvy to be in it for the postgame pizza. True to her hero, Sherlock Holmes, Ingrid begins fishing around to find out who's really pulling the strings in Echo Falls. But one morning, while en route to the dreaded MathFest, Ingrid is kidnapped and locked in the trunk of a car. Even if she escapes, will anyone believe her story? Published By HarperCollins on 2007-05-01