"It's Halloween! The twins Luke and Lottie are so excited. They are going trick-or-treating! A cheerful and simple story about Halloween. For brave ghosts and witches ages 3 and up"--Page [4] of cover.

Assuming her twin's identity, Frey works to destroy her father. When a rebel uprising strands her in Pas, and the city comes under attack, Frey must step out of the shadows to find her missing sister and take action against her tyrant father.

Leaving Dev to face the Revinir alone, Thisbe leads a group to Artime to help Fifer, Aaron, and his allies combat the reckless new head mage, Frieda Stubbs.

Eleven-year-old twins Miles and Beckett Fowl enjoy adventure and mayhem while helping a troll escape nefarious forces that want his magic.-- One week after their eleventh birthday, the Fowl twins-- scientist Myles, and Beckett, the force of nature-- befriend a troll who has clawed his way through the earth's crust to the surface. Unfortunately the troll is being chased by a nefarious nobleman and an interrogating nun, who both need the magical creature...

For their twelfth birthday Willow's mom is planning a combined birthday party for Willow and her twin brother, Winston--boys and girls will both be invited for a Halloween masquerade, but soon the games threaten to get out of hand.

Back in London, fifteen-year-old twins Sophie and Josh Newman must determine whom they can and cannot trust as they search for both Scatty and an immortal who can teach Josh the magic of fire, while Doctor Dee and Machiavelli continue to seek power.

The people of Uztar have long looked to the sky with hope and wonder. Nothing in their world is more revered than the birds of prey and no one more honored than the falconers who call them to their fists. Brysen strives to be a great falconer--while his twin sister, Kylee, rejects her ancient gifts for the sport and wishes to be free of falconry. She's nearly made it out, too, but a war is rolling toward their home in the Six Villages, and no bird...

Maren has been very close to her mother, so she is not happy when she discovers that she will soon have a new stepfather, and when she meets his twin children she is not sure that even her three friends, Delaney, Ashley, and Willow, can pull her through--especially after the twins shave Ashley's dog Coco during a particularly disastrous sleepover.

Twins Astrid and Apollo are excited to be going to the Hmong July Fourth Soccer Festival, but when they are told to babysit their baby sister, Eliana, it looks like they will miss the particular match their father is interested in--especially as they cannot figure out what the "yummy milk" Eliana demands is, and are forced to spend their money on buying different treats to keep her from throwing a tantrum.

Identical twins Meredith and Mallory Brynn have always shared one another's thoughts, even as they dream, but their connection diminishes as they approach their thirteenth birthday, and one begins to see the future, the other the past, leading them to discover that a high school student they know is doing horrible things that place the twins, and others, in grave danger.