"When thirteen-year-old Valor is arrested, she could not be happier. Demidova's prison for criminal children is exactly where she wants to be. Valor's sister Sasha is already serving a life sentence for stealing from the royal family, and Valor is going to help her escape ... from the inside"--

Javan Najafai, crown prince of Akram, has spent the last ten years at an elite boarding school, far away from his kingdom. But his eagerly awaited return home is cut short when a mysterious impostor takes his place and no one believes Javan is the true prince.

Alex Sawyer and his friends end up in even more trouble after being caught trying to escape from Furnace Penitentiary for young offenders, and they find themselves struggling to survive solitary confinement.

After his failed attempt to escape from Furnace Penitentiary, Alex struggles to survive the bloodstained laboratories beneath where monsters are manufactured, with a death sentence--or worse--hanging over his head.

Pursued by the Alcatraz guards, Erro and Zak take refuge in the Phantom Forest, a dark wood of giant trees and extremely dangerous beasts where they find it safer to travel on the tree branches and avoid the huge hungry rats below--until the tree branch they have landed on turns out to be an enormous dragon-like flying serpent who does not appreciate being ridden.

Teenagers Zak and his alien friend, Erro, are trying to make it across the Plateau of Leng before the rising sun reveals them to the robot guards of Planet Alcatraz, but suddenly mountain-sized crystals start rising through the desert sands, threatening to trap them in a circle with a giant scorpion--and the boys must figure out how to escape this series of hazards.

Zak Nine and Erro believe they've finally found a way to get off planet Alcatraz. 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, and will they ever get to return home?

Caught by the guards, Zak and his alien friend, Erro, are taken to the Pit, one of prison Planet Alcatraz's most escape-proof features, where every movement causes the Pit to descend deeper--and somehow the two teenagers will have to figure out a way to climb the walls and escape.

Pursued by a killer cyborg tank and surrounded by snakes that spit fire, teenage friends Zak and Erro the furling from the planet Quom, must figure out a way to survive if they are ever to escape from the prison planet called Alcatraz--a situation they are in because they stowed away on a space ship they did not know was headed here.

After stowing away on a spacecraft, Zak and his alien friend, Erro, did not expect to end up on the prison planet called Alcatraz, but here they are; their latest plan to escape involves stowing away on another spacecraft--unfortunately this one is only going to Alcatraz's nearby metallic moon, a prison just as deadly as Alcatraz itself.