"'Daddy, there's a man in our room...' Alfie wakes one night to find his twin daughters at the foot of his bed, claiming there's a shadowy figure in their bedroom. When no such thing can be found, he assumes the girls had a nightmare. He isn't surprised that they're troubled. Grief has made its home at Hart House: nine months ago, the twins' mother Pippa died unexpectedly, leaving Alfie to raise them alone. And now, when the girls mention a new imaginary...

"Awakening to find herself trapped in a strange tower, Izaveta knows she must find her way back to the Tóurensi palace and claim the throne. But even with an unexpected ally's help, she worries she might not be able to get news of her survival to her sister and escape this frozen land. Back at home, Asya enlists Nikov's help to prove Izaveta is still alive, even as she finds herself forced to navigate the political world she always sought to avoid...

"Thirteen-year-old twins Hope and Gordon enter a spelling bee in a last-ditch effort to save their family from financial ruin, only to find themselves in a cut-throat competition to uncover a fortune and dark secrets about the wealthy relations they have never known."--

Twins Theo and Alexander, their older sister Wil, and five new friends find themselves at an electrifying manor run by Mister Frank and Dr. Stein.

"A moving middle grade story...about the enduring bond between twins: Anders, who has recently died, and Lily, who has to balance her grief and confusion with a brother who isn't quite gone--and how to navigate a world that is moving forward without him"--

The Sinister-Winterbottoms, twins Alexander and Theo and their older sister Wil, find themselves at a mysterious summer camp where they meet other families whose parents are missing.

"With witches like their parents out for power and blood and non-magical people increasingly threatened by them, Dani and Dorian don't know whose side they're on...or if anyone's on their side. That includes their brother, Damien, who disappeared after being crowned King of Witches. But since Monica's father, the king, and her fiancé, Prince William disappeared, too, Dani and Dorian know they must set out to find their lost allies. Luckily, they...

"By now you've heard the legend, all but forgotten, of Santa Claus's twin sister. Many years ago, this shadowy figure followed in Santa's footsteps, searching for him while leaving odd gifts of her own. One fateful night, they finally came face-to-face, and she hasn't been heard from since. Until now ... The Christmas witch has returned ... In the highly anticipated follow-up to the bestselling The Legend of the The Christmas Witch, award-winning...

"When Kai's twin sister, Kishi, is stolen and killed by the legendary Ghost Whale, Kai sets out a long and dangerous adventure to bring her back to life"--

Following the clues left behind, Theo and Alexander find themselves at Siren's Song Seaside Amusement Park, where they must work together to escape, stop their newfound nemesis Essa, save Wil and their friends, and find their parents.