The quiet community of Red Rock is upset by an apparent abduction attempt on two middle school girls.

Red Rock suffers a spate of "mailbox baseball" vandalism and twins Bryce and Ashley become witnesses.

Jake Konig, a famous horror novelist, disappears under mysterious circumstances, and the Timberlines become involved when the editor asks Bryce and Ashley's mother to finish writing Jake's last book.

After joining a tennis camp at a local country club, twins Ashley and Bryce Timberline are blamed for outbreaks of vandalism there, and must work not only to clear their names, but also to find the real culprit.

At Halloween, facing a series of disasters while pet sitting, thirteen-year-old twins Ashley and Bryce gain insights into their principal and classmate Boo, and investigate a string of robberies at fast food restaurants in and around Red Rock.

While participating in a forensics contest, twins Ashley and Bryce investigate not only the disappearance of a college student but also behind-the-scenes dirty tricks during the public speaking competition.

When eighth grade begins, twins Ashley and Bryce get caught up in investigating why their principal left under mysterious circumstances, even as they struggle to get along with his replacement, who seems to be out to get them.