While their parents are away doing research, brothers Duffy and Sumo Pugg go with their cousin, Mister Come-and-Go, to Kokalaha Island, where they meet Aunt Lulu and become trapped in an erupting volcano.

Twelve-year-old twin adventurers Cleopatra and Alexander Dodge are reunited with their father and realize that two family heirlooms reveal the location of a treasure that is their birthright.

When Bayport's new mall is about to open, Frank, Joe, and eight others investigate suspicious accidents that keep occurring the night before the opening.

Naven, Emily and their crew of resistance fighters set off to find the lost city of Cielis and its' Guardian Council's Stonekeepers.

Starfire's big sister, Blackfire, is back, making all of the Teen Titans the victims of this super-sibling rivalry.

After escaping the Black Hook Gang in 1860 New York City, twelve-year-old twins Alexander and Cleopatra flee to New Orleans, become separated, and try to find each other in San Francisco, while being followed by pirates who think they hold the key to treasure.

"After the tragic death of their father, Emily and Navin move with their mother to the home of her deceased great-grandfather, but the strange house proves to be dangerous. Before long, a sinister creature lures the kids' mom through a door in the basement. Em and Navin, desperate not to lose her, follow her into an underground world inhabited by demons, robots, and talking animals. Eventually, they enlist the help of a small mechanical rabbit named...

"Meet Charise. She's energetic, helpful, a model pet owner, and full of inventions. But she's also a bad sister. When she goes too far and breaks little brother Daniel's tooth, can she redeem herself? Is an accident really an accident if you could have stopped it? But most importantly...What does it mean to be a good sister?"--

It's been years since the Nazis invaded Max Rosen's home country of Poland. All the Jewish people, including Max's family, have been forced to live in a ghetto. At least Max and his sister, Zena, had Papa with them... Until 2 months ago, when the Nazis took him away. Now Max and Zena are on their own. One day, with barely enough food to survive, the siblings make a daring escape from Nazi soldiers into the nearby forests. They are found by Jewish...

"Like a bolt from the blue, Jack's little sister Maddy is gone--carried into another realm by an ogre. When Jack and Lilly follow Maddy's captor through the portal, they are ready for anything . . . except what they find waiting for them in the floating crossroads between worlds. Even the power of their magic plants may not be enough to get them back to earth alive. Alone and injured, Jack and Lilly must each face their own monsters--as well as giants...