A terrorist doesn't let strangers in her flat because they might be undercover police or intelligence agents, but her children bring their mates home and they run all over the place. The terrorist doesn't know that a kid has bugged every room in her house, cloned the hard drive on her PC, and copied all the numbers in her phone book. The kid works for Cherub. Cherub agents are aged between ten and seventeen. They live in the real world, slipping under adult radar and getting information that sends criminals and terrorists to jail.

Summer, 1940. Hitler's army is advancing towards Paris, and millions of French civilians are on the run. Amidst the chaos, two British children are being hunted by German agents. British spy Charles Henderson tries to reach them first, but he can only do it with the help of a 12-year-old French orphan. The British secret service is about to discover that kids working undercover will help to win the war.

As the son of Hades, Nico di Angelo has been through so much, from the premature deaths of his mother and sister, to being outed against his will, to losing his friend Jason during the trials of Apollo. But there is a ray of sunshine in his life—literally: his boyfriend, Will Solace, the son of Apollo. Together the two demigods can overcome any obstacle or foe. At least, that's been the case so far . . . Now Nico is being plagued by a voice calling out to him from Tartarus, the lowest part of the Underworld.

Ben Ripley may only be in middle school, but he's already pegged his dream job: CIA or bust. Unfortunately for him, his personality doesn't exactly scream "secret agent". In fact Ben is so awkward, he can barely get to school and back without a mishap. Because of his innate nerdiness, Ben is not surprised when he is recruited for a magnet school with a focus on science - but he's entirely shocked to discover that the school is actually a front for a junior CIA academy.

To everyone at Meridian High School, Michael Vey is an ordinary 14-year-old. In fact, the only thing that seems to set him apart is the fact that he has Tourette's syndrome. But Michael is anything but ordinary. Michael has special powers. Electric powers....