"Boston, 1985. Private Investigator - and former Special Forces operative - Andy Roark knows he doesn't fit in with the regular clientele at the Harvard Club, and that's fine by him. He's at the elegant bar for one reason only: to meet with the former ambassador of Laos. Ambassador Gordon Stevenson has a job for him . . . and Roark's here to turn it down. So what if Stevenson's been getting death threats? After what he did during the Vietnam war,...

"When a series of murders baffles police in Vancouver, Washington, no one expects a high school kid to solve the mystery. But Issy O'Keefe is an amateur sleuth, thanks to her forensics class, as well as a highly intelligent young woman. Still, it's a tough time for Issy. She's a star basketball player, but her team is terrible. And since she's taller than most of the boys at school, her social life isn't the best. Helping her through this challenging...

When her old beau, Detective Marcus Gordon, is accused of murder, resourceful librarian Kathleen and her magical felines must paw through the clues to discover who is trying to frame him for murder.

"Sent to his father's home after being expelled from middle school, Spencer attempts to reconnect with Sully only to find himself in a secluded camp for troubled boys, where he works to foil the Tribe's plans for expansion."--

Charlie Thorne, along with former agents Dante Garcia and Milana Moon, race to find an immensely powerful discovery of Isaac Newton's and face challenges and enemies along the way. Charlie Thorne is a genius. Charlie Thorne is fearless. Charlie Thorne may have finally met her match. Charlie Thorne is used to being on the run. Ever since she was recruited by the CIA to track down Einstein's most dangerous equation, Charlie - and former CIA agents...

While camping in Zion National Park, Jake Evans and his friends uncover a new set of cryptic clues hidden in his grandfather's scrapbook. Battling unpredictable weather, unforeseen challenges, and an elusive adversary, the three friends are forced to rely on their problem-solving skills, the power of their growing friendship, and the courage to do the right thing.--Publisher's description.

"Before Jake?s grandfather died, he was on the trail of a centuries-old mystery. And he has entrusted that mystery to Jake, leaving behind a set of hidden codes, riddles, maps, and other clues that lead Jake and his friends on a scavenger hunt into the most wild and rugged wilderness of the national parks. The scavenger hunt takes Jake and his friends, where few people venture to go, into the depths of the Grand Canyon. Jake, Amber, and Wes encounter...