Book 1

The Secret Zoo

by Bryan Chick

Published 1 June 2010
"On Halloween night, the scouts, along with their Descender allies, must battle terrifying sasquatches at their own elementary school. Little do they know, the sasquatches are merely the bait to a trap. DeGraff captures three of the Descenders and drags them into a frightening, off-limits sector of The Secret Zoo. Meanwhile, Noah and his friends must protect two of their animals allies from police officers who are convinced that they are dangerous animals on the rampage. Will the scouts be able to save their friends in time, both animal and human?"--

Book 2

Secrets and Shadows

by Bryan Chick

Published 1 February 2011
What Secrets Are Hiding in the Shadows? Noah and his friends thought they had seen it all during their first journey into the Secret Zoo-but it was only the beginning. Now they must train to become Crossers, members of a secret society who freely travel to the Secret Zoo and back, helping to defend its borders. But now that the monstrous sasquatches are on the loose and the evil Shadowist is plotting destruction, will Noah, Megan, Ella, and Richie have what it takes to survive?

Book 3

Riddles and Danger

by Bryan Chick

Published 27 September 2011
Can four friends save the secret zoo? Noah, Megan, Richie, and Ella are the Action Scouts: friends whose tree house overlooks the Clarksville City Zoo. When they discover a magical world hidden within the zoo, they are swept away on an adventure in which penguins can fly, a mysterious figure lurks in the shadows, and the scouts are enlisted to help Mr. Darby, who is in charge of the Secret Zoo. But will the scouts be able to fight against the dangerous sasquatches who have escaped the zoo and threaten their town? There's only one way to find out!

Book 4

Traps and Specters

by Bryan Chick

Published 25 September 2012
Noah's sister Megan noticed some strange things happening at the local zoo. Like the animals leaving the zoo in the middle of the night, or suddenly appearing out of nowhere in exhibits. She started documenting the strange events in her diary. But Megan didn't notice the shadowy presence watching her. Then she disappeared! Now it's up to Noah and his two best friends to find her-sneaking around the nasty zoo workers intent on keeping them out. Luckily, the animals are on their side. With the help of polar bears, penguins, prairie dogs, and more, the adventurers make an astonishing discovery: behind the exhibit walls exists an alternate world, where humans and animals coexist as equals. And the world is under threat. The Secret Zoo is the gripping beginning of a brand-new series from debut author Bryan Chick.

Book 5

Raids and Rescues

by Bryan Chick

Published 24 September 2013
The fifth book in the fast-paced and imaginative series about four adventurous friends and the secret world hidden in their local zoo. Ella, Noah, Richie, and Megan are in trouble-and so is the Secret Zoo! A captivating series for tween readers praised as "action packed and breathless" by Publishers Weekly, and "a fast-paced mix of mystery and fantasy" by School Library Journal. The Secret Zoo is an incredible world hidden beneath the regular Clarksville Zoo, where animals and humans peacefully coexist as equals. It is full of marvels. But even in the Secret Zoo, there are dangers ...and forbidden places. When the scouts' friends are held in the off-limits sector-a never-ending maze of aquariums-Noah, Megan, Richie, and Ella must be at their most courageous. This page-turning mystery and adventure is perfect for reluctant readers!