C. Alexander London

"CALLING ALL CAHILLS! Announcing a 39 Clues Superspecial adventure -- the gang is back, and called to investigate one of their own: Sinead Starling."--

Andrew believes in the importance of loyalty. He is loyal to his family, his hound dog Dash, and his country the Confederate States of America. Although he's too young to join the Confederate Army, Andrew is welcomed into the Home Guard, a group of men who track down deserters and runaways. He and Dash make a great team. But hunting people is very different from hunting raccoons. And soon Andrew's loyalty will be tested like never before.

As the children of two world-famous explorers, eleven-year-old twins Celia and Oliver prefer television-watching to adventure-seeking until their father takes them to Tibet to help search for their long-lost mother.

As American troops are being pulled out of Vietnam, young soldier Chuck goes AWOL when he learns that the Army intends to euthanize his companion, military working dog Ajax.

Cory McNab is a member of the Navy's Marine Mammal Program where he is partnered with a search-and-recovery dolphin named Kaj, and their new mission is to help locate a spy submersible lost in North Korean waters--but first they have to win the trust of the Navy SEALs who are assigned to deal with the problem.

After his parents are killed, Kit, a young raccoon sets off for the city with a stone that may be the key to finding the Bone of Contention, a legendary object that is proof of a deal giving the wild animals the rights to Ankle Snap Alley, which the dogs and cats--known as the flealess--want back and are willing to kill for.

"Cory McNab is a proud member of the US Navy's Marine Mammal Program. Along with his dolphin partner, Kaj, he teaches new recruits how to work with their dolphins to locate underwater explosives, intercept enemy swimmers, and otherwise keep America safe"--Back cover.

Dan Cahill must determine whether Sinead Starling, a former friend who betrayed his family, is behind a plot to control a deadly virus or is trying to stop it from getting out.

"Explore new and familiar worlds where the human consciousness can be uploaded into a body on Mars . . . an alien helps a girl decide if she should tell her best friend how she feels . . . two teens get stuck in a time loop at a space station . . . people are forced to travel to the past or the future to escape the dying planet . . . only a nonbinary person can translate the binary code of a machine that predicts the future . . . everyone in the world...