Demigod Percy Jackson, still with no memory, and his new friends from Camp Jupiter, Hazel and Frank, go on a quest to free Death, but their bigger task is to unite the Greek and Roman camps so that the Prophecy of Seven can be fulfilled.

Introduces Roman numerals, explaining how the letters of the system equate to modern numbers, how to count, add, and subtract in the system, and demonstrating the many instances of Roman numbers found in modern culture.

Usborne starting point history series.

Uniting with Jason, Piper and Leo after the dangerous quest in "The Son of Neptune," Percy, Hazel and Frank wonder who will be chosen to fulfill the Prophecy of Seven, completing their group's number, and sail with them to an ancient land to find the mysterious Doors of Death.

"Fiona Davis, author ofThe Dollhouse, returns with a compelling novel about the thin lines between love and loss, success and ruin, passion and madness, all hidden behind the walls of The Dakota, New York City's most famous residence. After a failed apprenticeship, working her way up to head housekeeper of a posh London hotel is more than Sara Smythe ever thought she'd make of herself. But when a chance encounter with Theodore Camden, one of the...

When Neptune tells Emily and her merman father and human mother to return to Brightport to try to make merpeople and humans work more closely together, Emily faces problems with old enemies, her new, half-merfolk friend Aaron, and a mystery related to a group of legendary lost sirens.

After finally convincing her mother that she should take swimming lessons, twelve-year-old Emily discovers a terrible and wonderful secret about herself that opens up a whole new world.

A narrative history of the countries included in the Romano-Germanic-Empire during the Middle Ages and Germany from the ninth century to the nineteenth century.

A brave and marvelous book. A page-turner that will rip your heart out. ;'Jon Krakauer. In the tradition of 'Into the Wild' comes an instant classic of outdoor literature, a riveting work of uncommon depth. The Adventurer's Son is Roman Dial's extraordinary account of his two-year quest to unravel the mystery of his son's fate. In the predawn hours of July 10, 2014, the twenty-seven-year-old son of preeminent Alaskan scientist and National Geographic...