Books published by publisher Darby Creek Pub, 2011

In the third book in the series, young Alien Agent Zack Gaither is sent to Mongolia to liaise with his fellow agent Vraj, whom we met in Camp Alien. Vraj’s people, the Tirgizians, are exploring the area for evidence of dinosaurs, whom the Tirgizians believe to be their long-lost ancestors. Enter the Kaipa Kapa Syndicate, a mixture of bad guys, including the Gnairts who’d previously tried to kill Zack and Vraj. The syndicate kidnaps the Tirgizians, and with the help of two local Mongolian kids, Zack and Vraj manage to free them and avoid being discovered.

Max, exceptional escapologist and master magician, returns for another electrifying mission. Futuristic robots have been spotted at large on the streets of London, and the Department for Extraordinary Activity is sending Max to investigate. He must follow the robots back to their own world, where they are making their final preparations to wage war on humans. Can Max uncover the sinister cyborgs' deadly state-of-the-art new weapon and save the world from total meltdown?

Madeleine's the newest arrival at the famed Dario Quincy Academy of Dance. She's worked hard to gain admission, and she's determined not to lose her scholarship. That means not asking too many questions when her antique necklace goes missing, and certainly not breaking curfew. So how does she find herself exploring the creepy tunnels that run underneath the school? As if rivals at dance practice weren't bad enough, Madeleine begins to suspect that there's an ancient evil on the academy grounds. And when Madeleine and her rivals join together, sneaking out at night to explore the school's depths, the evil might just follow them back upstairs.

Rachel Deering has her eyes on her toes: she wants to become a world-class ballerina. As a 14-year-old, she is already one of the best dancers in the country. Just as she prepares for an audition for an opening with a prestigious dance troupe, Rachel starts having some very disturbing symptoms. After collapsing at school, she has many tests and her doctor tells her the news: She has diabetes. Now her world consists of blood tests, insulin shots, a controlled diet, and constant fear that she will have a reaction and end up unable to dance—or worse.

Readers will have tons of fun creating the codes right along with the characters in this interactive series. Cody, Quinn, Luke, and M.E. love playing around with codes. In fact, they love codes so much they have their own club, with a secret hideout and passwords that change every day. On a class trip to the Cornell Mission, the Code Busters learn about Hippolyte de Bouchard, California's only known pirate. Now the Code Busters are on the trail of a new prize: pirate gold! But with a fortune at stake, the codes are bound to be hard. Will the Code Busters be able to figure them out, or will this mystery prove to be too difficult to solve?