The Crossbones — Patrick Carman

Ryan and Sarah have solved one mystery . . . only to find themselves trapped by another. At first it seemed that the Crossbones was a secret society limited to Skeleton Creek. But now new facts are being unearthed -- with new dangers attached.

As they dig deeper into the hidden history of the Crossbones, Ryan records everything in his notebook -- and Sarah captures everything she sees on video. As the spookiness spreads, this new mystery is going to take Sarah and Ryan far beyond Skeleton Creek and across America, each new site more haunted than the last, each new clue adding up to a spine-chilling secret.

Someone has created a mystery. Ryan and Sarah must solve it. And everyone around them wants to stop them.