As they travel through their sixth year at Hogwarts, Harry and his friends receive help from the mysterious Half-Blood Prince in their search for the complete story of how Tom Riddle became Lord Voldemort and find in the process what might be Voldemort's only vulnerability.

The magic tree house takes Jack and Annie to a moon base in the future where they continue to search for the fourth thing they need to free their friend Morgan from the magician's spell.

The magic tree house whisks Jack and Annie back to a field hospital during the American Civil War. There they meet a famous nurse named Clara Barton and do their best to help wounded soldiers. It is their hardest journey yet--and the one that will make the most difference to their own lives!

Witch and Yale historian Diana Bishop discovers an enchanted manuscript, attracting the attention of 1,500-year-old vampire Matthew Clairmont. The orphaned daughter of two powerful witches, Bishop prefers intellect, but relies on magic when her discovery of a palimpsest documenting the origin of supernatural species releases an assortment of undead who threaten, stalk, and harass her.

"After traveling through time in Shadow of Night, the second book in Deborah Harkness's enchanting series, historian and witch Diana Bishop and vampire scientist Matthew Clairmont return to the present to face new crises and old enemies. At Matthew's ancestral home at Sept-Tours, they reunite with the cast of characters from A Discovery of Witches--with one significant exception. But the real threat to their future has yet to be revealed, and when...

Jack and Annie travel in their Magic Tree House back to a Hawaiian island of long ago where they make friends, learn how to surf, and encounter a tsunami.

"Long ago, in a time forgotten, a preternatural event threw the seasons out of balance. In a land where summers can last decades and winters a lifetime, trouble is brewing. The cold is returning, and in the frozen wastes to the north of Winterfell, sinister and supernatural forces are massing beyond the kingdom's protective Wall. At the center of the conflict lie the Starks of Winterfell, a family as harsh and unyielding as the land they were born...

When Reuben discovers an antique watch that was mortared into the wall, he soon learns it has a secret power. As one secret leads to another, Reuben finds himself torn between his innately honest nature and the lure to be a hero. Now he is on a dangerous adventure, and with fearless Penny, mighty Jack, and the wise Mrs. Genevieve on his side, Reuben must outwit and outmaneuver the sly villain called The Smoke and his devious defenders the Directions,...

Detective Tom Moon and his multi-talented team face off against an international crime ring looking to seize control of America's most vibrant city, Miami. The city of Miami is Detective Tom Moon's back yard. He's always kept it local, attending University of Miami on a football scholarship, and, as a Miami PD officer, protecting the city's most vulnerable. Now, as the new leader of an FBI task force called "Operation Guardian," it's his mission to...

Guided by a magic rhyme, Jack and Annie travel to ancient Baghdad on a mission to help the Caliph disseminate wisdom to the world.