Meet Jeffrey James — almost 13, visiting California for the first time, and getting the grand tour from his cousin and a new friend.

Beaches... Mansions... Hollywood studios... Limo rides... A secret cave in Malibu...

Until things go sideways and his new phone launches them into something they never saw coming.

Set against a backdrop of famous landmarks and sun-kissed beaches, and packed with heart, humor, and spine-tingling suspense, their magical travel adventure soon morphs into a heart-pounding thrill ride.

With its clever blend of danger, fun, and brain teasers, this page-turning mystery delivers a message that feels more relevant today than ever — and lingers long past its final pages.