In his second adventure, eleven-year-old Gregor returns to the world beneath New York City to rescue his kidnapped sister, Boots, and fulfill a prophecy that will restore peace to the people, bats, rats, cockroaches, and spiders who populate the underworld.

Aiden works with the FBI in order to rescue his sister Meg, who was kidnapped.

Sharing with one's little sister can be an awful bother, but it has its rewards, too.

The magical preserve Fablehaven provides refuge to numerous mystical species: centaurs, trolls, satyrs, ogres, fairies, minotaurs, brownies, imps, nymphs, and many others. But some beings are too large and powerful to be confined to regular enchanted refuges. These mightiest of creatures dwell inside the dragon sanctuaries.

After their parents, the rulers of the Star Lands, are deposed and their kingdom flooded, Asa and Rollo hide out until they come into possession of a ghost ship and magic powers, which they use to find the baby sister they thought had died with their parents.

Stella's little brother Sam wonders whether fairies are invisible. Stella assures him that she has seen hundreds of them and that if she and Sam venture across the meadow and into the forest, they are likely to find some. So begins another adventure in the Stella and Sam series about the irrepressible red-head, and her slightly apprehensive little brother.

When eleven-year-old Gregor and his two-year-old sister are pulled into a strange underground world, they trigger an epic battle involving men, bats, rats, cockroaches, and spiders while on a quest foretold by ancient prophecy.

Sent to Camp Happy Harmony to learn how to get along with each other, pairs of brothers and sisters chronicle in letters home how they come to suspect the intentions of the singing family running the camp.

Revisits the sometimes challenging relationship between a six-year-old (The Pain) and his eight-year-old sister (The Great One).