This was no accident . . . or was it?

Raleigh Harmon just won a coveted science contest, and the chance to compete for a $50,000 college scholarship. Great news, right?

Only her goofy aunt drives her to the contest in North Carolina, and as soon as they arrive, Raleigh realizes she’s way out of her league. The competitors are ruthless brainiacs. She has no idea how to win this contest.

But when one of the competitors almost dies, Raleigh looks like a prime suspect. Can she solve the science riddle, and pick out the bad guy—or girl—before they escape the island? And what if the bad guy is the guy Raleigh really likes?

Stone and Sand is the third book in the Raleigh Harmon prequel mystery series, introducing the girl who will become a forensic geologist and FBI agent—provided she survives the high school years.