Secret agent Jack Stalwart

In The Escape of the Deadly Dinosaur, Jack zooms to the city that never sleeps to try to solve the mystery of the missing Allosaurus toe. Starting at the Natural History Museum, Jack's detection takes him to a competitive grade-schooler determined to win the science fair with his experiment crossing his own dog with the DNA from the bone of a dangerous, carnivorous dinosaur. Soon the gargantuan creature is terrorizing New Yorkers and Jack must...

In The Mystery of the Mona Lisa, Jack is sent to the Louvre Museum in Paris to track down the theft of the world's most beloved painting. He must match wits with a seemingly invisible mastermind in order to stop Leonardo's masterpiece from slipping into the criminal underground forever. Can Jack's Hypo-Disk overpower a glove that shoots laser beams from its fingertips? Jack's adventures in the city of light demonstrate once again that when...

When an archaeologist who guards the priceless 1,000-year-old treasures of the temple of Angor Wat goes missing, her daughter Kate calls on Jack to help bring her home. No sweat for a top secret agent. Except this time it's personal. The archaeologist also has information leading to the whereabouts of Jack's missing brother. Now Jack must stop a power-hungry madman before the treasure, and the archaeologist, disappear forever.

Deep inside China's famous Wolong Nature Reserve, an endangered Giant Panda named Ling has disappeared, and for his seventh mission, Jack is paired with a surly, sixteen-year-old park assistant named Fong to help track the panda down. As a member of the evil Scorpion Gang, Fong and a partner Wong have been posing as assistants to steal Ling, and several other rare creatures from the reserve to sell on the black market. Now Jack must infiltrate the...

"On the eve of the first manned mission to Mars, Secret Agent Jack Stalwart learns that the mission's chief rocket engineer has disappeared. When he finds out that engineer is his father, Jack vows the kidnapper is going to live to regret it. Can Jack keep his cool to save the day?"--p. [4] of cover.

Under the cover of darkness, a band of ninja thieves has stolen some of Japan's most priceless treasures, including an ancient samurai sword. Can Secret Agent jack Stalwart take on the gang before the treasures are lost forever?

The Hunt for the Yeti Skull (Book 13) Jack has become the most decorated secret agent for the Global Protection Force, but during the day he's still just an ordinary kid who has to put up with annoying people — like Marko Mayer, a new student in Jack's rock-climbing class. When Jack and Marko race to the top of the wall, Marko stomps on Jack's hand and wins — then has the nerve to gloat! But Jack has no time to sulk — the GPF needs him...