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Since learning she is the Ruby, the final member of the time-traveling Circle of Twelve, nothing has gone right for Gwen and she holds suspicions about both Count Saint-German and Gideon, but as she uncovers the Circle's secrets she finally learns her own destiny.

Christopher Rowe is shipwrecked in Devonshire, where children are disappearing and a ghost is suspected, but even Tom and Sally's arrival may not cure his amnesia in time to help.

Michael Malone is assigned to investigate a local comic shop by the mysterious UNICORNE agency because they are displaying a comic book with a disturbingly familiar heroine--but he soon realizes that the sinister shop hides an invisible army come to life, with a menacing maniac at its head, and worse he does not know if he can trust his fellow agents.

Luca and Isolde continue their journey searching for evil in medieval Christenndom.

Sixteen-year-old Gwen, the newest and final member of the secret time-traveling Circle of Twelve, searches through history for the other time-travelers, aided by friend Lesley, James the ghost, Xemerius the gargoyle demon, and Gideon, the Diamond, whose fate seems bound with hers.

In 1889 London young women are turning up dead, and Evaline Stoker, relative of Bram, and Mina Holmes, niece of Sherlock, are summoned to investigate the clue of the not-so-ancient Egyptian scarabs--but where does a time traveler fit in?

In this first volume in the series, "eight singular middle schoolers from across America find belonging in a series of escape room-type challenges. Each sixth grader assumes that winning a coveted spot to spend three days at the Octagon Valley Institute led by Willy Wonka-esque Onasander Octagon--an ethnically ambiguous multiracial tech genius--means winning a 'golden ticket to the rest of your life.' However, they soon realize that instead of an...

"Rebecca Strand was just sixteen when she and her father fell to their deaths from the top of the Gibraltar Point Lighthouse in 1839. Just how they fell--or were they pushed?--remains a mystery. And their ghosts haunt the lighthouse to this day. . . Gabe tells this story every day when he gives the ghost tour on Toronto Island. He tries to make it scary enough to satisfy the tourists, but he doesn't actually believe in ghosts--until he finds himself...

Grace Blakely believed that finding the truth about her mother's murder would finally give her peace, but now she knows that it is only the beginning of the secrets that will dominate her life--and make her a target on Embassy Row in Adria.

"There was once a time when darkness shrouded the world, and the darkness had a queen. Adelina Amouteru is done suffering. She's turned her back on those who have betrayed her and achieved the ultimate revenge: victory. Her reign as the White Wolf has been a triumphant one, but with each conquest her cruelty only grows. The darkness within her has begun to spiral out of control, threatening to destroy all she's gained. When a new danger appears, Adelina's...