Mars and his friends have escaped the Martian colony and returned to Earth, to find that all the adults have vanished! A thrilling sci-fi adventure based on Sea

Mars is on Mars! But as techie colonists and scrappy rebels clash, can Mars and his friends survive long enough to discover the planet’s dark secrets? Based o

Returning to Earth after escaping the Martian colony, Mars Patel and his friends, along with genius billionaire Oliver Pruitt, discover that all the adults have

Along the train lines north of New York City, twelve-year-old neighbors Myla and Peter search for the link between Myla’s necklace and the disappearance of Pe

Being thirteen is happy, sad, humiliating, surprising, wonderful, awful, exciting, boring -- in other words, full of ups and downs. The thirteen-year-olds in Ga