I am thrilled to be hosting a spot on the JADIE IN FIVE DIMENSIONS by Dianne K. Salerni Blog Tour hosted by Rockstar Book Tours. Check out my post and make sure to enter the giveaway!


About the Book:


Authors: Dianne K. Salerni

Pub. Date: October 5, 2021

Publisher: Holiday House

Formats: Hardcover, eBook, Audiobook

Pages: 288

Find it: GoodreadsAmazon, Kindle, AudibleB&NiBooks, KoboTBD, Bookshop.org

A thirteen-year-old girl seeks answers about her past in the fourth dimension--and beyond--in this think-outside-the-box adventure.

What do you do when it turns out your whole life has been a lie?

Jadie Martin was always told she was abandoned by her parents. Creatures from the 4th dimension rescued her and placed her with a loving adoptive family. Now, Jadie acts as an agent for the beings, also known as Seers. She uses the 4th dimension as a short-cut to travel anywhere on Earth, performing missions calculated to guide the world toward a brighter future.

But then Jadie discovers that her origin story is fake. In reality, her birth family has suffered multiple tragedies and disasters engineered from 4-space, including the devastating loss of their baby girl. Her!

Doubting the Seers, Jadie starts anonymously observing her long-lost family. Why are they so important? What are the true intentions of the Seers? And what will all-powerful four-dimensional beings do to a rebellious human girl when they realize she's interfering with their plans?

A Wrinkle in Time meets Flatland in this thrilling journey that challenges the meaning of family, loyalty, and our universe at large.

A Junior Library Guild Gold Standard Selection


"Salerni offers a page-turning adventure tale and adeptly breaks down the math and science elements behind multidimensional theory for middle-grade readers. The book also has heart, touching on the emotional lives of two adopted 13-year-olds and the true meaning of family."—Booklist

"A thrilling ride through a multidimensional universe and high-stakes action"—Kirkus Reviews

"A complex, engaging sci-fi adventure that offers a different perspective on our world, literally from a dimension beyond."—School Library Journal




1. Jadie

My target holds her phone against her ear, scurrying down the sidewalk in high heels. She’s dragging a wheeled suitcase and carrying a tapestry bag over her shoulder. The bag has sunflowers on it, which is how I know I’ve got the right lady.

Coasting behind her on my skateboard, I weave between pedestrians. One man snarls at me—“Watch it, girl!”— even though I didn’t touch him.

Great. Last thing I need is someone drawing attention to me.

Luckily, the woman is too busy talking on her phone to notice. She’s heading for a subway entrance a block ahead, so I have to make my move.

A lot of kids on my middle school soccer team talk about getting into “the zone.” I call it Jadie 2. 0— an alternate me that pushes the regular Jadie Martin aside and tells my body what to do. Speed up. Bend your knees. Lean left.

Bearing down on the woman, I hook my fingers under the st rap of her tapestry bag and hurl it as far as I can into traffic.

The bag strikes the windshield of a taxi, spewing its contents over the car and into the street.

The woman whirls toward me with a furious shriek, her hands curved into manicured claws. Cutting sharply away on my board, I call over my shoulder, “Sorry!”

I only did what I was ordered to do.

Other people shout after me, but only the guy who yelled at me a few seconds ago gives chase. “Come back here, you little punk!”

I steer into the closest alley, which turns out to be a mistake. A delivery van blocks the exit, and two guys are stacking crates around the vehicle. There’s no way I can get through them with the angry man ten steps behind me.

What I do next is against protocol, but I don’t see an alternative. Hopping off the skateboard, I stamp on the back end and grab the front axle. As my pursuer barrels toward me, his hand outstretched, I stab the round button on my metal bracelet and vanish.

Or at least that’s what it looks like to the man in the alley.

For me, it’s like being knocked from my skateboard while traveling at top speed— a sudden wrench in a new direction.

Not a normal direction like up, down, left, or right. I’m flying kata,  out of three- dimensional space.

Shutting my eyes to keep from getting dizzy, I hold out my arm. Only when my feet hit a metal platform and my bracelet clicks into a port- lock do I blink and look around. The alley is gone, replaced by what looks like a modern art painting sprung to life. In front of me, gold loops squirm and blue orbs pulse. Off to my right, silver tubes intersect in impossible ways like an optical illusion— but this isn’t an illusion.

This is 4-space.

I glance down between my feet, through the metal grid of the platform. Earth isn’t visible to human eyes from this position, but it’s there. My planet, the solar system, the Milky Way Galaxy . . . the entire three- dimensional universe, in fact, is nest ed inside the vast ness of this four- dimensional universe the way one Russian doll fits inside another.

A red glow illuminates the space around me— bright enough to see by, but not as satisfying as sunlight or even a strong lightbulb. It reminds me of a fi re burning in the wilderness, which always makes me wonder if these platforms are inside or outside. Or if inside  and outside aren’t the only two options when you have four spatial dimensions.

The only things that make sense to my eyes are the platform I’m standing on and the items I brought with me: my skateboard and my bracelet, where today’s assignment is spelled out on a small screen.

Woman with luggage walking toward subway station. Sunflower tapestry bag. Throw into traffic.

Underneath these instructions are the spatial coordinates of the event— a string of numbers that mean nothing to me.They placed me in the correct location for my mission, but they aren’t necessary to get me home.

At the edge of the platform there’s a clunky console that looks like something from the 1960s. It has large, numbered keys for entering coordinates on the way to a course correction, and three buttons labeled Complete, Incomplete, and Return to be used afterward.

Hugging my skateboard under my arm, I push Complete.

The screen on my bracelet goes blank.

Assignments like this leave me conflicted. On one hand, I’m pumped with adrenaline, like when I intercept a ball on the soccer field. On the other hand, what I did was an aggressive act against a player unaware of the game.

It feels like a foul.

I hope things turn out okay for that lady. Maybe she would’ve been flattened by a bus at the next intersection and the delay I created saved her life. Or maybe, when she misses her train, she passes the time before the next one by buying a winning lottery ticket.

But Miss Rose tells us that the desired outcome of our missions rarely involves the target. The end result of throwing a purse into the street might be four steps removed from the act. Maybe the taxi that got hit with the bag misses a fare, and because of that,  two people meet who wouldn’t have met if the taxi had been there. They fall in love, get married, and have a kid who someday cures cancer.

That would make throwing a stranger’s bag into traffic totally worthwhile.

After I’ve registered my assignment as complete, I push the Return button. The platform whirs into action, sliding past four identical but unoccupied platforms. Traveling through 4-space creates a shortcut between any two locations in 3-space. Therefore, it’s only seconds before my platform stops, the port- lock releases my bracelet, and I’m yanked ana, the direction opposite from kata. The machine returns me to the same location I departed from earlier today: my bedroom in my house in Kansas, slipping me between the walls and the roof through the open fourth dimension (which is visible from 4-space even though humans can’t perceive it). The adult Agents nicknamed this machine the Transporter because when it deposits me on the fuzzy blue rug in the center of my room, I appear in the blink of an eye, like in Star Trek.

Alia Malik looks up without any surprise and says, “Hey, Jadie.” She’s lying on my bed, scrolling on her phone. “Where you been?”

“A city. Not sure where.” I drop my skateboard and nudge it with my foot, sending it off to a corner of the room. Alia isn’t surprised that I appeared out of nowhere, but I’m a little surprised to see her. She’s my neighbor and a fellow Agent, but she’s not usually waiting in my bedroom when I get back from missions.

“I went to Thailand,” she says. “Third time this month.”

Alia, her sister, and her parents often get sent to Thailand, the country of Alia’s grandparents. I wish I would get assignments overseas. “Did you see anything interesting?”

Alia snorts. “I was in a fi eld. I opened a fence. What’d you do?”

“I threw some lady’s purse into traffic.”

“Jadie!” Alia gasps in partly fake, partly real horror. “You get all the mean ones.”

She’s not wrong. I hope it’s because I’m athletic and not because Miss Rose thinks I’m a criminal at heart.

Alia flashes a wide, forced smile. “I have a favor to ask. Any chance you’d babysit for me tomorrow?” She holds up her arm and rattles a bracelet identical to mine.

Babysit.  She wants me to take her bracelet and cover her assignments, which is against the rules. Course corrections are designed specifically for each Agent. We aren’t supposed to swap them.

Alia sees my hesitation and starts begging. “Please, Jadie!

There’s a Cosmic Knight  tournament tomorrow. I can’t leave in the middle without forfeiting.” Alia is obsessed with the online game Cosmic Knight,  a race- slash- battle among alien players— water- breathing assassins, murderous spider ladies, poisonous floating gas bags— seeking a mysterious token that will protect the finder’s homeworld from destruction. I played once, but I prefer soccer.

“If you tell Miss Rose, she won’t give you a mission while it’s going on,” I point out. Our 4-space liaison doesn’t assign course corrections during activities where our disappearance would be noticed. When Alia chews her fingernail and avoids my eyes, I get it. “Ohhh. You’re grounded again.”

She grimaces. “I failed a history test . I’m not supposed to be out of the house this weekend, except for course corrections, and Mom says no online activities for two weeks. But she and Dad will be at Tehereh’s color guard competition tomorrow, soooo . . .”

“I have a soccer game in the morning.”

“I wouldn’t need you until one o’clock.”

I sigh.

“I already asked Huan and Jin.” Those are the fifteen-year- old Agents across the cul-de-sac. “But they’re visiting colleges this weekend. I know your brother would do it— Ty probably would, for a price— but I don’t trust them to get the job done. No offense to Marius.”

“None taken.” My brother, Marius, is always willing to help a friend but sometimes lacks good judgment. As for my next- door neighbor, Ty Rivers, I wouldn’t want to give him that kind of blackmail material if I were Alia.

She presses her hands together. “Help me, Jadie Martin.

You’re my only hope.”

I recognize the line from Star Wars but shoot back, “You mean your last  hope. ’Cause you already asked Huan and Jin, crossed off Marius and Ty, and you can’t ask your sist er or one of the adults to do it.”

“C’mon. I probably won’t get an assignment during the couple of hours you have the bracelet.” She hesitates. “I know you don’t want to get in trouble with the Seers because of . . . you know . . . but—”

“Because of what?”

Alia shrugs like she doesn’t want to bring it up. “Because you owe them your life.”

My shoulders hunch automatically, but I try to look like it’s no big deal.

Twelve years ago, my natural- born parents abandoned me by the side of a highway in the middle of a snowstorm. Like trash.

I should have died. But superintelligent beings from a higher dimension sent their best Agents to rescue me and raise me as their own daughter. I grew up in a loving family with great parents and a brother who’s an idiot sometimes, but still my brother. For the past six months, since I turned thirteen, I’ve had the honor of serving as an Agent myself, assisting the Seers in their mission to put Earth on track for a brighter future. When they tell me to mug a lady on the street, I do it and do it well.

I see that Alia’s face is falling, and I feel like trash on the side of the highway, disappointing my friend rather than break one tiny rule. It’s only a couple of hours, and if Alia is asked to close a fence in Thailand, I can close that fence as well as she can. In fact, I bet I can close a fence like it’s never been closed before.

“I’ll do it.”


About Dianne K. Salerni:

Dianne K. Salerni has written many books for children and young adults, including state-award nominated series The Eighth Day and Junior Library Guild selection Eleanor, Alice, and the Roosevelt Ghosts. She attended the University of Delaware and the University of Pennsylvania before teaching fourth and fifth grades for many years. Now Dianne spends her time hanging around creepy cemeteries, climbing 2,000-year-old pyramids for book research, and volunteering at her local rescue animal shelter.


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Giveaway Details:

3 winners will receive a finished copy of JADIE IN FIVE DIMENSIONS, US Only.

Tour Schedule:

Week One:


Rockstar Book Tours

Kickoff Post


BookHounds Ya



Kait Plus Books



I'm Shelfish



Jazzy Book Reviews



Two Chicks on Books






Jaime's World



Rajiv's Reviews





Week Two:





The Reading Wordsmith



Nonbinary Knight Reads and Reviews



#BRVL Book Review Virginia Lee Blog



Little Red Reads






Books and Zebras



The Momma Spot



Two Points of Interest



Lifestyle of Me