The Timberline family makes a weekend getaway for a visit to a gold exhibit but it leads to a search for a stolen gold nugget and danger for the entire family.

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

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

Dallas O'Neil and his Baker Street friends decide to investigate when one of them overhears plans for a murder.

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.

Twins Ashley and Bryce face their toughest challenge yet when the terrorist responsible for their father's death seeks revenge against their stepfather, a government agent, and targets schools, beginning with theirs.