Even as he grows stronger and closer to discovering the secret of his identity, Arthur must face further dangers and conflicts as he struggles to attain the Sixth Key from the powerful Saturday.

Young Arthur Penhaligon must weigh an offer from Lady Friday that is either a cunning trap for the Rightful Heir or a golden opportunity that he must seize.

When eleven-year-old Olive and her distracted parents move into an old Victorian mansion, Olive finds herself ensnared in a dark plan involving some mysterious paintings, a trapped and angry nine-year-old boy, and three talking cats.

What is the nature of space and time? How do we fit within the universe? How does the universe fit within us? But, few of us have time to contemplate the cosmos. So Tyson brings the universe down to Earth succinctly and clearly, with sparkling wit, in tasty chapters consumable anytime and anywhere in your busy day.

Detroit 2030: Double-crossed by the person she loved and betrayed by the covert government organization that trained her to use her body as a weapon, Peri Reed is a renegade on the run. Don't forgive and never forget has always been Peri's creed. But her day job makes it difficult: she is a drafter, possessed of a rare, invaluable skill for altering time, yet destined to forget both the history she changed and the history she rewrote. When Peri discovers...

1916: The Western Front. Private Percy Blakeney wakes up. He is lying on fresh spring grass. He can hear birdsong and the wind in the leaves. Where have the mud, blood, and blasted landscape of no-man's-land gone? For that matter, where has Percy gone? 2015: Madison, Wisconsin. Police officer Monica Jansson is exploring the burned-out home of a reclusive - some say mad, others alleged dangerous - scientist who seems to have vanished. Sifting through...

When he goes to spend the summer with his great-aunt in the family's old house, eleven-year-old Drew is drawn eighty years into the past to trade places with his great-great-uncle who is dying of diptheria.

"Annie, Edward, and their young daughter, Rose, live in a cramped apartment. One night, without warning, they find a beautiful terrace hidden in their closet. It wasn't there before, and it seems to only appear when their friend Stephanie visits. A city dweller's dream come true! But every extra bit of space has a hidden cost, and the terrace sets off a seismic chain of events, forever changing the shape of their tiny home, and the shape of the world"...

The fate of the multiverse rests in Marguerite Caine's hands, it's up to her to stop the destruction. With billions of life at stake, the risks have never been higher.

Twelve-year-old William uses the magic token to return, through the toy castle in his attic, to the medieval land of Sir Simon, which is now menaced by a skeleton ship bearing a plague of ravenous rats.