Omega City: The Forbidden Fortress

Perfect for fans of The Goonies and Rick Riordan, The Forbidden Fortress is the thrilling sequel to Omega City, from acclaimed author Diana Peterfreund.

Gillian Seagret is not having a great summer. Her mother’s come back with plans to move Gillian and her brother across the country, and her father is away promoting his new book on Omega City—without her! Though Gillian and her friends were the ones to find the lost doomsday bunker, no one seems to care about their thoughts on the whereabouts of its creator, Dr. Underberg, or learning the truth about the Shepherds, a mysterious group that will stop at nothing to keep Underberg—and Omega City—a secret.

All that changes when Gillian and her friends are invited to speak at a lecture series at Guidant Technology. Finally they’re being recognized for their adventures! The Guidant campus is full of wonders, from self-driving cars to robot waiters, and the future-focused employees seem like worth heirs to Dr. Underberg.

But there are secrets here, too—a radio station that plays nothing but coded numbers, and an island that doesn’t appear on any map. And when Gillian and her friends uncover evidence that the Shepherd conspiracy goes deeper than anyone suspected, it’s up to them to infiltrate the Shepherds’ secret base and expose them . . . before it’s too late.

• Kid Detectives: Gillian and her friends were the only ones to find Omega City, and now they’re the only ones who can unravel the conspiracy at the high-tech Guidant campus.
• Puzzles and Riddles: A mysterious radio station broadcasts coded messages from an island that doesn’t exist on any map, pushing the friends’ problem-solving skills to the limit.
• Secret Base: The team must go undercover to infiltrate the Shepherds’ hidden fortress and expose the truth before their enemies silence them for good.
• Found Family: With her own family in turmoil, Gillian must rely on her trusted friends to face down a powerful enemy that will stop at nothing to protect its secrets.

Praise for OMEGA CITY: “Young readers looking for a page-turning quest should get into this planned series on the ground floor.” - Booklist (starred review)

Praise for OMEGA CITY: “[A] fast-paced series opener” - Publishers Weekly

Praise for OMEGA CITY: “Omega city is a treat…an exciting read, hard to put down, and just plain fun.” - Voice of Youth Advocates (VOYA)

Praise for OMEGA CITY: “A crowd-pleaser in the spirit of The Goonies” - Bulletin of the Center for Children’s Books

Praise for ACROSS A STAR-SWEPT SEA: “[A] mysterious spy adventure in a lush and terrifying futuristic world” - Voice of Youth Advocates (VOYA) (starred review)

Praise for ACROSS A STAR-SWEPT SEA: “A charming bit of light adventure” - Publishers Weekly

Praise for FOR DARKNESS SHOWS THE STARS: “Don’t you love it when a brilliant idea meets with brilliant execution? Thank you, Diana Peterfreund for giving us a post-apocalyptic Persuasion. This book is meltingly good.” - Laini Taylor, National Book Award Finalist for LIPS TOUCH: THREE TIMES

Praise for FOR DARKNESS SHOWS THE STARS: “A beautiful, epic love story you won’t be able to put down!” - Simone Elkeles, New York Times bestselling author of the Perfect Chemistry series

Praise for FOR DARKNESS SHOWS THE STARS: “A smart and sexy tale of star-crossed love that’s as thought-provoking as it is heartbreaking.” - Robin Wasserman, author of THE BOOK OF BLOOD AND SHADOW

Praise for FOR DARKNESS SHOWS THE STARS: “Readers…will hardly have time to catch their breath before each new twist and turn.” - School Library Journal

Praise for ACROSS A STAR-SWEPT SEA: “An imaginative and energetic retelling of The Scarlet Pimpernel-sheer fun!” - Lauren Willig, New York Times bestselling author of the Pink Carnation series

Praise for ACROSS A STAR-SWEPT SEA: “Delicious romance, class warfare, and genetic engineering-Diana Peterfreund will ensnare you with this sci-fi twist to a classic story.” - Cinda Williams Chima, best-selling author of the Heir Chronicles and Seven Realms series

Praise for FOR DARKNESS SHOWS THE STARS: “This novel is a postapocalyptic retelling of Jane Austen’s Persuasion that will be a hit with fans of sci-fi romances … Readers will keep turning the pages right up to the end.” - School Library Journal

Praise for FOR DARKNESS SHOWS THE STARS: “A richly envisioned portrait of a society in flux, a steely yet vulnerable heroine, and a young man who does some growing up.” - Publishers Weekly

Praise for FOR DARKNESS SHOWS THE STARS: “A post-apocalyptic retelling of Jane Austen’s Persuasion scores high for ingenuity.” - Kirkus Reviews

Praise for FOR DARKNESS SHOWS THE STARS: “Diana Peterfreund’s For Darkness Shows the Stars is an impassioned ode to Jane Austen, love, and the hope found in stars.” - Beth Revis, New York Times bestselling author of ACROSS THE UNIVERSE and A MILLION SUNS

Praise for ACROSS A STAR-SWEPT SEA: “A good bet for readers looking for strong female protagonists, characters of color or just an enjoyable romantic adventure with a science-fiction spin.” - Kirkus Reviews

Praise for ACROSS A STAR-SWEPT SEA: “Peterfreund’s novel is riveting and intense...Readers will love this page-turning story and its dramatic climax.” - Romantic Times

Praise for ACROSS A STAR-SWEPT SEA: “Engrossing and fastpaced.” - Booklist

Praise for ACROSS A STAR-SWEPT SEA: “Complex in both plotting and themes, this science fiction revision of The Scarlet Pimpernel offers political intrigue, narrow escapes, and forbidden romance” - Bulletin of the Center for Children’s Books

Praise for ACROSS A STAR-SWEPT SEA: “A well-paced story led by a strong and likable heroine.” - School Library Journal

Praise for ACROSS A STAR-SWEPT SEA: “Across a Star-Swept Sea is, like its main character Persis Blake, a delight. Intrigue, romance, beautiful world-building, nuanced characters, and timely, intriguing questions come together to make this the perfect read. I loved it!” - Allie Condie, #1 New York Times bestselling author of the Matched trilogy