It all starts when Mark finds a piece of paper with a clue that describes a mask of untold worth and value. With the help of his sister, Emily, and Italian friend, Marco, the trio is off on a journey around Italy searching for the mysterious mask and riches they dream will come with finding it.

Klooz decides to investigate the strange accidents that have been happening at the ice cream parlor after Vinnie hangs a weird mask on the wall.

When a mysterious stranger claims to own Becca's beloved zorse, Zed, the Curious Cat Spy Club fears he might be responsible for abusing Zed in the past. Kelsey, Becca, and Leo are determined to uncover the truth before they have to give him away. But when a daring rescue attempt puts Kelsey in danger, does the CCSC have enough spy skills to save her, or are they in over their heads?

New York Collapse is an in-world fictionalized companion to one of the biggest video game releases of 2016: Tom Clancy's The Division from Ubisoft. Within this discarded survivalist field guide, written before the collapse, lies a mystery—a handwritten account of a woman struggling to discover why New York City fell. The keys to unlocking the survivor's full story are hidden within seven removable artifacts, ranging from a full-city map to a used transit card. Retrace her steps through a destroyed urban landscape and decipher her clues to reveal the key secrets at the heart of this highly anticipated game.

The Aldens are preparing for a yard sale when they find an old wooden mask in the trash behind a neighbor's house. Violet notices that the mask looks like a Native American mask that she had read about. When the children go to the library to learn more about the mask, they discover that they have found an old Native American mask from the Hopi tribe. When the children learn there will be an Intertribal Pow-Wow at the park over the weekend, they plan to deliver the mask to its rightful owners. But Henry, Jessie, Violet, and Benny soon find out that they’re not the only people interested in the history of the old wooden mask. A strange man is following them around, and an antique dealer is looking for more than her fair share at the Boxcar yard sale. When the mask is stolen from their garage, the Aldens vow to find it before the weekend Pow-Wow. But with such little evidence, will they be able to find the mask in time?

It’s Career Week at Bayport Elementary, and Frank and Joe’s school assembly turns up some interesting guests. One student’s uncle is an animal trainer who brings a chimpanzee. Another girl’s father is an anthropologist who brings in a mask decorated with feathers and shells from a Pacific island. But when the assembly is interrupted by a fire drill, the mask is stolen—and the Hardys spring into action.