MURDER AT TRIESTE CITY! The problem isn't hiding the body and cleaning the blood that part's easy. The real problem is the identity of the Admiral's killer: Meg McClusky, Truman "Mac" McClusky's twin sister. She stabbed USSF Admiral Taurus T. Benning in the chest and neck, murdering the man who killed their father all those years ago. Soon the USSF sends a tenacious investigator to the underwater city of Trieste, and what started as an act of revenge...

Their magic tree house takes Jack and Annie deep into the sea, where they meet up with dolphins, sharks, and octopi as they search for the answer to an ancient riddle.

"You think you know James Reece. Think again. A storm is on the horizon. America's days are numbered. A Chinese submarine has gone rogue and is navigating towards the continental United States, putting its nuclear missiles within striking distance of the West Coast. A rising Silicon Valley tech mogul with unknown allegiances is at the forefront of a revolution in quantum computing and Artificial Intelligence. A politician controlled by a foreign power...