Amy and Dan find themselves in Vienna, where they search for clues while evading their enemies, and attempt to discover the truth about their famous ancestors, Wolfgang Amadeus Mozart and his sister Nannerl.
While in her second year at Explorer Academy, Sailor discovers her older sister's sudden disappearance may be linked to an illegal and deadly animal-trafficking ring and must choose to embrace her destiny to find the truth.
Amy and Dan find themselves in Vienna, where they search for clues while evading their enemies, and attempt to discover the truth about their famous ancestors, Wolfgang Amadeus Mozart and his sister Nannerl.
Follows siblings Jakob Novis and his quirky younger sister Lizzie as they find themselves at Bletchley Park, the home of WWII codebreakers working to decrypt the Nazi's Enigma cipher, where the two struggle to unravel a mystery surrounding their mother's disappearance against the backdrop of the Battle of Britain and Hitler's feared invasion.
A cryptic message forces eighteen-year-old American Edda to investigate what secrets followed her across the ocean, even as she tries to make sense of her time as a telephone operator on the French front lines of World War I.
In the summer of 1940, siblings Jakob and Lizzie Novis find themselves at Bletchley Park, where Jakob works to crack Nazi codes while Lizzie investigates the mysterious disappearance of their mother, only to discover that the two mysteries are intertwined.
Amy and Dan find themselves in Vienna, where they search for clues while evading their enemies, and attempt to discover the truth about their famous ancestors, Wolfgang Amadeus Mozart and his sister Nannerl.
"Still reeling from the life-changing discovery he found buried in the mysterious archive, Cruz Coronado grapples with an important secret as the gang heads to China in search of the second-to-last piece of the cipher. Under the watchful eye of a new adviser, life on the ship returns to almost normal . . . Almost. Just as things seem to be going smoothly, a familiar face shocks Cruz back into reality, and the final piece in this life-and-death scavenger hunt veers toward a dead end"--Publisher.
Dan and Amy Cahill are given the choice of receiving a million dollars or uncovering the thirty-nine clues hidden around the world that will lead to the source of the family's power, but by taking on the clues, they end up in a dangerous race against their own family.
In 1666, after four months away, friends Christopher Rowe, Tom, and Sally return to London triumphantly but, guided by coded riddles, face a conspiracy that threatens Christopher, as well as the King himself.
