Jack finally receives a coded message from his brother Max, possibly detailing his whereabouts. But duty calls, and Jack is whisked away to the sweltering savannah of Kenya before he can decipher it. Once there, a wise and kind Masai chief alerts Jack to a series of elephant killings where the corpses have been robbed of their tusks. Jack must find the malevolent ring of poachers responsible before more of these endangered species are destroyed.

Destination: Italy. Jack's car-racing hero, Morgan Parks, is in danger. Someone has already tried to kill him once, and they're about to try again. Can Secret Agent Jack Stalwart save his idol and the Italian team's chance to win the Monza Grand Prix?

Destination: Italy. Jack's car-racing hero, Morgan Parks, is in danger. Someone has already tried to kill him once, and they're about to try again. Can Secret Agent Jack Stalwart save his idol and the Italian team's chance to win the Monza Grand Prix?

On the eve of the first manned mission to Mars, a madman has kidnapped the space project's chief engineer. Can Secret Agent Jack Stalwart save the day and keep his cool when he finds out who the missing engineer is?

In The Caper of the Crown Jewels, Jack is summoned to solve a matter of grave national importance: the theft of the Crown Jewels of the British Empire from the Tower of London. Arriving on the scene, he is greeted by a traditional Tower guard- a Yeoman Warder (or Beefeater)- who explains what's missing: The Imperial State Crown, the Sovereign's Orb, and the Sovereign's Scepter with the cross containing the finest-cut diamond in the world, the Star of Africa. Jack identifies Ivan the Incredible and his assistant, Jazz, as the thieves immediately--but puzzling out how they did it is stickier. The famous Tower has the most advanced security in the world, and even using his impressive gadgets (the Encryption notebook, Heli-Spacer, Rock Corer, and Rope Tornado) Jack is flummoxed by how the jewels were spirited out. However, Jack can conjure up more than gadgets--he foils the evil magicians with some powerful mojo of his own, dispels an invisibility enchantment, and narrowly avoids the executioner's block before restoring the jewels to the crown and earning the gratitude of the Queen herself!

A group of scientists have gone missing in the Arctic - could this be linked to their research into global warming? Jack must face the harsh weather and a very hungry polar bear to find out . . .

Off the coast of Australia, a diver has vanished and along with him an unknown treasure from the wreck of the HMS Pandora. Can Secret Agent Jack Stalwart find the diver and defeat a deadly band of pirates before they sail away with the treasure for ever?

While secret agent Jack Stalwart is deciphering a code from his missing brother, Max, he's called away on a mission to Kenya. Someone has been killing elephants for their ivory tusks. Can Jack find the poachers in time to stop them from striking again? Suggested level: primary.

"The Mona Lisa", the most famous painting in the world, has been stolen from the Louvre Museum in Paris. Can secret agent Jack Stalwart find it before an evil red-haired man takes it out of the country, never to be seen again?

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 ruthless gang's Beijing headquarters, overrun with menacing teenage thieves, and rescue Ling and the other animals before they, and maybe Jack, disappear forever.