Book picks similar to
Omega City by Diana Peterfreund


middle-grade
science-fiction
adventure
mystery

Last Day on Mars


Kevin Emerson - 2017
    Not since it was burned to a cinder by the sun, which has mysteriously begun the process of going supernova. The human race has fled to Mars, but this was only a temporary solution while we prepare for a second trip: a one-hundred-fifty-year journey to a distant star, our best guess at where we might find a new home.Liam Saunders-Chang is one of the last humans left on Mars. The son of two scientists who have been racing against time to create technology vital to humanity’s survival, Liam, along with his friend Phoebe, will be on the very last starliner to depart before Mars, like Earth before it, is destroyed.Or so he thinks. Because before this day is over, Liam and Phoebe will make a series of profound discoveries about the nature of time and space, and find out that the human race is just one of many in our universe locked in a desperate struggle for survival.

The Shadow Cipher


Laura Ruby - 2017
    Fifty-seven years later, the enigmatic architects disappeared, leaving behind for the people of New York the Old York Cipher—a puzzle laid into the shining city they constructed, at the end of which was promised a treasure beyond all imagining. By the present day, however, the puzzle has never been solved, and the greatest mystery of the modern world is little more than a tourist attraction.Tess and Theo Biedermann and their friend Jaime Cruz live in a Morningstarr apartment house—until a real estate developer announces that the city has agreed to sell him the five remaining Morningstarr buildings. Their likely destruction means the end of a dream long-held by the people of New York. And if Tess, Theo and Jaime want to save their home, they have to prove that the Old York Cipher is real. Which means they have to solve it.

Masterminds


Gordon Korman - 2015
    Eli Frieden has never left Serenity, New Mexico...why would he ever want to? Then one day, he bikes to the edge of the city limits and something so crazy and unexpected happens, it changes everything.Eli convinces his friends to help him investigate further, and soon it becomes clear that nothing is as it seems in Serenity. The clues mount to reveal a shocking discovery, connecting their ideal crime-free community to some of the greatest criminal masterminds ever known.The kids realize they can trust no one—least of all their own parents.

Serafina and the Black Cloak


Robert Beatty - 2015
    There’s plenty to explore in her grand home, although she must take care to never be seen. None of the rich folk upstairs know that Serafina exists; she and her pa, the estate’s maintenance man, have secretly lived in the basement for as long as Serafina can remember.But when children at the estate start disappearing, only Serafina knows who the culprit is: a terrifying man in a black cloak who stalks Biltmore’s corridors at night. Following her own harrowing escape, Serafina risks everything by joining forces with Braeden Vanderbilt, the young nephew of the Biltmore’s owners. Braeden and Serafina must uncover the Man in the Black Cloak’s true identity... before all of the children vanish one by one.Serafina’s hunt leads her into the very forest that she has been taught to fear. There she discovers a forgotten legacy of magic, one that is bound to her own identity. In order to save the children of Biltmore, Serafina must seek the answers that will unlock the puzzle of her past.

The Map to Everywhere


Carrie Ryan - 2014
    To Master Thief Fin, an orphan from the murky pirate world of the Khaznot Quay, the Map is the key to finding his mother. To suburban schoolgirl Marrill, it's her only way home after getting stranded on the Pirate Stream, the magical waterway that connects every world in creation. With the help of a bumbling wizard and his crew, they must scour the many worlds of the Pirate Stream to gather the pieces of the Map to Everywhere--but they aren't the only ones looking. A sinister figure is hot on their tail, and if they can't beat his ghostly ship to find the Map, it could mean the destruction of everything they hold dear! Heart-pounding escapades and a colorful cast of characters will have readers setting sail through this wholly original and unforgettable tale.

The Colossus Rises


Peter Lerangis - 2013
    In a few months, he’s going to die.One MissionJack needs to find seven magic loculi that, when combined, have the power to cure him.One ProblemThe loculi are the relics of a lost civilization and haven’t been seen in thousands of years.Seven WondersBecause they’re hidden in the Seven Wonders of the Ancient World.

The Darkdeep


Ally Condie - 2018
    only to discover an island hidden in the swirling mists below.Shrouded by dense trees and murky tides, the island appears uninhabited, although the kids can't quite shake the feeling that something about it is off. Their suspicions grow when they stumble upon an abandoned houseboat with an array of curiosities inside: odd-looking weapons, unnerving portraits, maps to places they've never heard of, and a glass jar containing something completely unidentifiable.As the group delves deeper into the unknown, their discoveries – and their lives – begin to intertwine in weird and creepy ways. Something ancient has awakened... and it knows their wishes and dreams – and their darkest, most terrible secrets. Do they have what it takes to face the shadowy things that lurk within their own hearts?

Winterborne Home for Vengeance and Valor


Ally Carter - 2020
    But she soon learns that this home isn't like any of the others - especially when she unearths the secret of the missing-and-presumed-dead billionaire, Gabriel Winterborne, who is neither missing nor dead but is actually living in a basement lair, sharpening his swords and looking for vengeance.Now that April knows Gabriel Winterborne is alive, she must turn to the other orphans to keep him that way. As a looming new danger threatens to take Gabriel down once and for all, they must use their individual talents to find a way to make sure this home for misfits isn't lost to them for ever.Because at the Winterborne Home, nothing is what it seems, no one is who they say they are and nowhere is safe. And now a ragtag group of orphans must unravel the riddle of a missing heir, a supposed phantom and a secret key, all without alerting the adults of Winterborne House that trouble is afoot.

The Island of Dr. Libris


Chris Grabenstein - 2015
    Libris. But something strange is going on. Besides the security cameras everywhere, there’s Dr. Libris’s private bookcase. Whenever Billy opens the books inside, he can hear sounds coming from the island in the middle of the lake. The clash of swords. The twang of arrows. Sometimes he can even feel the ground shaking. It’s almost as if the stories he’s reading are coming to life! But that’s impossible . . . isn’t it?

Orphan Island


Laurel Snyder - 2017
    The sun rises in a sky filled with dancing shapes; the wind, water, and trees shelter and protect those who live there; when the nine children go to sleep in their cabins, it is with full stomachs and joy in their hearts. And only one thing ever changes: on that day, each year, when a boat appears from the mist upon the ocean carrying one young child to join them—and taking the eldest one away, never to be seen again.Today’s Changing is no different. The boat arrives, taking away Jinny’s best friend, Deen, replacing him with a new little girl named Ess, and leaving Jinny as the new Elder. Jinny knows her responsibility now—to teach Ess everything she needs to know about the island, to keep things as they’ve always been. But will she be ready for the inevitable day when the boat will come back—and take her away forever from the only home she’s known?

The Box and the Dragonfly


Ted Sanders - 2015
    Miseries. Mysteries . . .From the moment Horace F. Andrews sees the sign from the bus—a sign with his own name on it—everything changes. The sighting leads him underground, to the House of Answers, a hidden warehouse full of mysterious objects. But there he finds only questions. What is this curious place? Who are the strange, secretive people who entrust him with a rare and immensely powerful gift? And what is he to do with it?Horace quickly discovers that nothing is ordinary anymore. From the sinister man lurking around every corner to the gradual mastery of his newfound abilities to his encounters with Chloe—a girl who has an astonishing talent of her own—Horace follows a path that puts him in the middle of a centuries-old conflict.Horace’s journey leads him and Chloe deep into a place where every decision they make could have disastrous consequences. Most important, it links Horace to the Box of Promises and a future he never saw coming.With an action-packed blend of science fiction and fantasy, Ted Sanders creates a world where everything is more than it seems and where friendship and loyalty have the greatest power of all.

The Peculiar


Stefan Bachmann - 2012
    Bartholomew and Hettie are changelings--Peculiars--and neither faeries nor humans want anything to do with them.One day a mysterious lady in a plum-colored dress comes gliding down Old Crow Alley. Bartholomew watches her through his window. Who is she? What does she want? And when Bartholomew witnesses the lady whisking away, in a whirling ring of feathers, the boy who lives across the alley--Bartholomew forgets the rules and gets himself noticed.First he's noticed by the lady in plum herself, then by something darkly magical and mysterious, by Jack Box and the Raggedy Man, by the powerful Mr. Lickerish . . . and by Arthur Jelliby, a young man trying to slip through the world unnoticed, too, and who, against all odds, offers Bartholomew friendship and a way to belong.Part murder mystery, part gothic fantasy, part steampunk adventure, The Peculiar is Stefan Bachmann's riveting, inventive, and unforgettable debut novel.

Monstrous


MarcyKate Connolly - 2015
    Because of his curse, girls sicken and disappear without a trace, and Bryre’s inhabitants live in fear. No one is allowed outside after dark. Yet night is the only time that Kymera can enter this dangerous city, for she must not be seen by humans. Her father says they would not understand her wings, the bolts in her neck, or her spiky tail—they would kill her. They would not understand that she was created for a purpose: to rescue the girls of Bryre. Despite her caution, a boy named Ren sees Kym and begins to leave a perfect red rose for her every evening. As they become friends, Kym learns that Ren knows about the missing girls, the wizard, and the evil magic that haunts Bryre. And what he knows will change Kym’s life.

Mrs. Smith's Spy School for Girls


Beth McMullen - 2017
    Even more shocking? Abigail’s mother is a top agent for The Center and she has gone MIA, with valuable information that many people would like to have—at any cost. Along with a former nemesis and charming boy from her grade, Abigail goes through a crash course in Spy Training 101, often with hilarious—and sometimes painful—results. But Abigail realizes she might be a better spy-in-training than she thought—and the answers to her mother’s whereabouts are a lot closer than she thinks…

Sidekicked


John David Anderson - 2013
     Andrew Bean might be a part of H.E.R.O., a secret organization for the training of superhero sidekicks, but that doesn’t mean that life is all leaping tall buildings in single bounds. First, there’s Drew’s power: Possessed of super senses – his hearing, sight, taste, touch, and smell are the most powerful on the planet – he’s literally the most sensitive kid in school. There’s his superhero mentor, a former legend who now spends more time straddling barstools than he does fighting crime. And then there’s his best friend, Jenna – their friendship would be complicated enough if she weren’t able to throw a Volkswagen the length of a city block. Add in trying to keep his sidekick life a secret from everyone, including his parents, and the truth is clear: Middle school is a drag even with superpowers. But this was all before a supervillain long thought dead returned to Justicia, superheroes began disappearing at an alarming rate, and Drew’s two identities threatened to crash head-on into each other. Drew has always found it pretty easy to separate right from wrong, good from evil. It’s what a superhero does. But what happens when that line starts to break down?