When middle school puzzle master Sam and history wiz Martina win a contest for a summer trip across the US, they discover they've been drafted into something va

In a book perfect for readers of Charles Duhigg’s The Power of Habit, David Eagleman’s Incognito, and Leonard Mlodinow’s Subliminal, the cognitive neurosc

Middle school geniuses Sam, Martina, and Theo head to Glacier National Park to find the second of seven artifacts--keys that unlock a secret weapon--left by the

When middle school puzzle master Sam and history wiz Martina win a contest for a summer trip across the US, they discover they've been drafted into something va

After Lissa Rogers and Kendra Kozak set out on a summer adventure, the two teenagers arrive at Terrebonne Key, an island in the Louisiana bayou rumored to be th