Welcome to the Takeover + Review Blitz for The Hidden Key of Brooke Sumner by Susan L. Tuttle, hosted by JustRead Publicity Tours! We read and enjoyed the first book in this series and I can't wait to finish it now that book three is out! Check out the excerpt and giveaway below! Thanks to JustRead and the publisher for sending me a copy of the book.
About the Book

Title: The Hidden Key of Brooke Sumner
Series: Treasures of Halstead Manor #3
Author: Susan L. Tuttle
Publisher: Kregel Publications
Release Date: March 24, 2026
Genre: Mystery & Suspense / Romance
Will the key unlock more than a vault filled with treasure?
Brooke Sumner has been carefully avoiding Storm Whitlock ever since he betrayed her trust. When he joins Caspar's mysterious treasure-hunting group, she steps away to focus on her antique shop and keep herself busy.
Then Caspar invites her back for one final assignment, and Brooke is torn. Returning to Halstead Manor to help the team find the second half of a key is intriguing. It also means she'd be working with Storm. But she doesn't trust his motives, so she reluctantly rejoins to keep him in check.
As they dive into their expedition, Brooke finds her heart softening toward those she'd once held at arm's length. And is it possible she misunderstood Storm's betrayal of their friendship?
"In this friends-to-more romance, we get to see the beauty of being known, being loved, and finding the people who want to walk alongside us." —Toni Shiloh, Christy Award-winning author
PURCHASE LINKS: Goodreads |
Kregel Publications |
Amazon |
Barnes & Noble |
Christianbook |
BookBub |
Bookshop
More Books from this Series:

Book Excerpt
. . . Gertie had some strong points, ones Brooke couldn’t ignore. The balance began to tip toward her return. She still had questions. “Has Caspar said what it is he needs to find?”
“Not in great detail. Though we know the first step is tracking down something that pairs with what we found tucked into the spine of Alice’s Adventures Under Ground.”
She’d known about the book, but not that it secretly held something. “Which was?”
“Half of a key.”
Curiosity welled. “How does one make half a key?”
“I supposed the same way one makes a whole key, except they create it in pieces that can be split apart,” Gertie said.
“I suppose,” Brooke mimicked Gertie’s carefree tone. Then she scooted forward, forearms across her knees. “Did he mention what this key unlocks should we possess both pieces?”
“He did not.” Sunshine spilled over Gertie and Burt, shining off their gray hair. “We have another meeting tomorrow, which is why I came tonight. Caspar knows where his father kept the other half, but he’s lost its hiding place. Seems it was in a painting.” Her cloudy eyes locked on Brooke as if she could clearly see her. “The Just Judges.”
Brooke straightened. That was the painting Storm had referred to? Countless hours speculating about its disappearance hardly covered their onetime fascination with the piece.
“From the Ghent Altarpiece?”
The panel had been missing from Belgium since 1934. An irreplaceable and priceless piece of artwork that vanished into thin air. All leads died right along with the supposed thief, Arsène Goedertier, when he passed away at the end of that year. He claimed to have stolen the panel and, with his final breath, promised he alone knew its location.
Gertie nodded. “The exact one.”
About the Author

Tour Giveaway
(1) winner will receive a copy of The Hidden Key of Brooke Sumner and $20 Amazon gift card!
Be sure to check out each stop on the tour for more chances to win. Full tour schedule linked below. Giveaway began at midnight April 15, 2026 and lasts through 11:59 PM EST on April 22, 2026. Winner will be notified within 2 weeks of close of the giveaway and given 48 hours to respond or risk forfeiture of prize. US only. Void where prohibited by law or logistics.
Giveaway is subject to the policies found here.
Enter Giveaway
Follow along at JustRead Tours for a full list of stops!
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