Books in the Escape from Planet Alcatraz series

After a recent daring escape attempt, Zak Nine and his Quom friend Erro are imprisoned in the most inescapable region of Alcatraz. The boys are locked in separate cages, hovering at the end of unbreakable chains over a boiling sea of poison. It's the most perilous adventure yet as the boys try to escape from Planet Alcatraz.

During their last adventure, Zak Nine and Erro found a mapping device in a crashed prison ship. Other than an occasional giant scorpion, the boys seem to be safe on the endless sands until they spring a deadly trap! Huge rocky walls spring up from beneath the sand, grinding against each other and forming into walls, passageways and stone cages.

Young Quom Erro and his human friend Zak Nine are in trouble. The boys are certain they can climb out, but they quickly discover the cunning secret of the pit. Will the boys manage to climb out or will their hopes dwindle as the circle of sky overhead shrinks to a distant dot?

Zak Nine and Erro have come up with a brilliant plan to escape. They'll simply hide on board a prison ship and ride it to freedom on another planet! Unfortunately, the boys don't get far when the ship docks at one of Planet Alcatraz's metallic moons. The hollow sphere is magnetic, and the only way to walk on it is by wearing special magnetic boots.

While avoiding a band of patrolling prison guards, the boys meet another escapee who tells them the legend of an abandoned spacecraft. The boys believe that if they can find the ancient ship, they'll be able to fix it and blast off from Planet Alcatraz.

But now they find themselves lost in a vast forest of alien birds and deadly plants. The prison guards are searching for the boys using a flock of remote bots, armed with flame-throwers and sleeping gas. Will the boys outwit the bots and find a way off Planet Alcatraz?

Zak Nine has been captured and placed in Planet Alcatraz's "Monster Zoo". But this isn't any ordinary zoo. This zoo holds dozens of alien "monsters" who are forced to fight for the entertainment of the prison planet's owners. Zak's friend, Erro, is determined to break into the zoo to rescue the human boy. Erro will need to rely on his Quom survival skills to succeed. Will he be able to find Zak, avoid the zoo's Overseers and find a way out?

Zak Nine and his Quom friend, Erro, are desperate to get off planet Alcatraz. The boys believe they've finally found a way to freedom when they join up with another prisoner. Together with their new partner, the boys board a small spacecraft and fly off the planet, past the metal moon, and head into space. But when the stars begin to look strange, Zak and Erro realize that something is very wrong. What will happen when the boys learn Planet Alcatraz's biggest secret? Will they ever be able to return home?

Travelling by night, Zak Nine and Erro are following a shadowy figure until the mysterious stranger disappears into a cave. The boys decide to follow. Inside they find a maze filled with priceless gems, along with a rough band of escaped criminals. Things go from bad to worse when a squad of Alcatraz guards arrives on the scene. When the guards start shooting their laser blasters, suddenly nobody is safe! Will Zak and Erro escape the deadly storm of laser fire, or will they be trapped in the endless dark forever?

As Zak Nine and his friend Erro make their way around a strange lake, they discover an ancient golden building. The boys decide to go inside to take a closer look, but unwittingly stumble into the legendary Octagon: an underground chamber with eight mysterious doors. One door will lead the boys to freedom, but the rest lead to sinister traps and certain death! Will Zak and Erro outwit the deadly room and escape before it's too late?

Erro and Zak Nine are hiding in the Phantom Forest, a dark wood filled with giant, towering trees and dangerous beasts. The boys hide high above the ground, climbing and jumping between the tree branches. So far they've avoided dangerous creatures such as huge, hairy rats and giant, bloodthirsty spiders. But a new predator has caught the boys' scent. An enormous flying serpent chases after them and won't stop until its hunger is satisfied! How will Zak and Erro avoid becoming dinner for this deadly new monster?