Zac Power is facing his biggest challenge ever! And this time the whole world is in danger... GIB's worst enemies have joined forces for their most evil plan yet, led by a mysterious new enemy called the Shadow. This mission will be the ultimate test of Zac's spy skills - especially if it means the end of the Government Investigation Bureau.

First it was MEGA, then it was EXTREME. Now it’s ULTIMATE! Is this the last Zac Power super series? A very special format for all Zac Power fans, the Ultimate Mission is three times the length of a regular Zac Power mission! Zac Power is facing his biggest challenge ever! And this time the whole world is in danger... GIB’s worst enemies have joined forces for their most evil plan yet, led by a mysterious new enemy called the Shadow. This mission will be the ultimate test of Zac’s spy skills – especially if it means the end of the Government Investigation Bureau.

Zac Power Overdrive Zac Power Horror House Zac Power Thrill Ride Zac Power Close Shave Packaged in a Zac Power branded tin!

Contains all 8 books in the interlinked Zac Power Extreme and Mega Mission Super Series! Mega Missions: Zac Power and his spy agency GIB are facing their biggest challenge yet - but so much of the mission is a mystery! What does Zac's long-lost grandpa have to do with it, and who is BIG's incredible new agent? GIB have no idea what's coming, and only Zac can save the day... Extreme Missions: When Zac Power's grandpa drags him on a new mission in the middle of the night, Zac is pumped. They're racing to find the four parts of a powerful gadget called IRIS. But Grandpa won't say what IRIS does, or why it's been broken up. The only thing Zac knows is that this time, the threat is bigger than to just GIB. If they don't find IRIS before their enemies do, the whole world will be in danger...

Contains all 4 books in the interlinked Zac Power Extreme Mission Super Series! When Zac Power’s grandpa drags him on a new mission in the middle of the night, Zac is pumped. They’re racing to find the four parts of a powerful gadget called IRIS. But Grandpa won’t say what IRIS does, or why it’s been broken up. The only thing Zac knows is that this time, the threat is bigger than to just GIB. If they don’t find IRIS before their enemies do, the whole world will be in danger...

In the final phase of the mission, Zac is racingagainst the clock to stop the enemy. And thesurvival of GIB depends on his success!

Book 3 in the interlinked Zac Power Extreme Mission Super Series! Zac’s whole family has been recruited to sneak into the City of Snow. They have to save the third piece of IRIS – but it’s hidden in the crown of the king himself! And when Zac’s family is taken hostage, he’s faced with the toughest decision of his spy career. Will he stay and fight for his family, or go and save the world from BIG and IRIS?