Hilton Head Mystery 4 Book Series - Paperback

$49.99 USD
$64.96 USD
Over 4,000,000 pages read
Emotional Rollercoasters
#1 Bestselling Author
7 Book Series
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Book Description

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Welcome to Hilton Head Island, where buried treasures, hidden conspiracies, and deadly secrets collide in an unmissable mystery-thriller series that will keep you hooked from the first page to the last.


Book 1: Secrets of Sea Pines – The Battle for Hilton Head Island’s Treasure

A treasure lost to time. A hunt that could cost everything.

In 1662, famed explorer William Hilton buried a treasure on the shores of what is now Hilton Head Island. His untimely death left the riches lost to history... until Charles Gramer stumbles upon Hilton’s missing will.

Drawing on his love for adventure, Charles sets out on a quest to uncover the legendary fortune. But his journey becomes far more perilous than he ever imagined, as ruthless treasure hunters, mafia leaders, and drug lords aim to claim the prize for themselves. With every clue he uncovers, Charles must navigate betrayal, deception, and mortal danger.

Will he survive the journey to uncover Hilton’s treasure... or will the quest cost him everything?


Book 2: Robber’s Row

They thought they found fortune. Instead, they found a curse.

Life couldn’t be better for Charles and Mary Gramer after striking gold—literally. With their newfound riches, they bring generosity and prosperity to Hilton Head Island. But their good fortune takes a sinister turn when Charles’ mother is killed in a mysterious hit-and-run.

As shadowy figures emerge and bodies begin to pile up, the Gramers are plunged into a web of lies and suspicion. Once beloved by their community, they now find themselves vilified and fighting to clear their name. Charles and Mary must protect their children, their fortune, and their lives...but will they survive the storm that’s coming?


Book 3: Spanish Wells

A killer on the loose. A family in peril. A community on the brink.

Newly appointed Sheriff JJ Gramer is struggling to solve a series of gruesome murders haunting Hilton Head Island. As the body count rises, JJ discovers the killings are tied to Mathis, the ruthless head of a Savannah crime syndicate.

With his parents, Charles and Mary Gramer, stepping in to help protect the family, JJ must outsmart Mathis—a criminal mastermind who always seems one step ahead. But when the killer threatens JJ’s sister and targets the Gramer family directly, the stakes become personal.

Will JJ stop the murderer before it’s too late? Or will the Gramer family become victims of their own legacy?

Book 4: In the Sound

"Two worlds collide in a heart-pounding crossover that will leave you breathless!"

FBI Agent Lacie Webb has taken on everything from ritualistic killers to ancient conspiracies, but nothing could prepare her for the secrets lurking beneath the charm of Hilton Head Island. In this highly anticipated crossover between the Lacie Webb Series and the Hilton Head Island Mystery Series, the stakes have never been higher, and the twists more shocking.

Lacie arrives at Hilton Head for a family wedding, expecting a break from her relentless pursuit of justice. Instead, she’s pulled into a chilling investigation when a bridesmaid vanishes, and the Gramer family becomes entangled in a deadly game of deceit. Beneath the island’s sun-soaked beauty lies a web of corruption, betrayal, and murder that threatens to destroy everything Lacie holds dear.

As Lacie and Hilton Head’s newly appointed Sheriff, JJ Gramer, uncover the truth, they unravel a web of lies stretching back generations. With Claire’s life hanging in the balance and the Gramer legacy on the brink of ruin, Lacie must decide who to trust in a place where allegiance is as dangerous as power.


Secrets will be unearthed. Loyalty will be tested. Monsters will be revealed.
Fans of the Lacie Webb Series and the Hilton Head Island Mystery Series will love this explosive crossover, packed with the high-stakes suspense and shocking twists that made both series unforgettable.

Why Readers Love the Hilton Head Island Mystery Series

  • Fast-paced, high-stakes action: Perfect for fans of treasure hunts, conspiracies, and thrilling twists.
  • Complex, relatable characters: If you like Lacie Webb... You're going to love Mary Gramer!
  • A vivid sense of place: South Carolina’s Lowcountry comes alive in every page, from its rich history to its dark secrets.
  • Unpredictable plots: Each book is packed with twists and turns that will keep you guessing until the end.



Praise for the Series:
⭐️⭐️⭐️⭐️⭐️ “A heart-pounding adventure that combines history, mystery, and family drama!”
⭐️⭐️⭐️⭐️⭐️ “The twists and turns never stop, Just when you think you’ve figured it out, another secret is revealed.”
⭐️⭐️⭐️⭐️⭐️ “A gripping series that gets better with every book. Can’t wait for the next one!”

Ready to dive in?

Start with Secrets of Sea Pines and join the Gramer family on a journey of danger, deceit, and discovery. Each book in the Hilton Head Island Mystery Series builds on the last, creating an unforgettable saga of love, loss, and survival.

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Happy Readers Say about Robert!

"The author's ability to build tension is masterful. The clinical details mixed with visceral imagery creates an atmosphere that stays with you long after reading." 

- BookReviewer Weekly

"What stands out is the balance between procedural detail and emotional impact. Robert knows when to pull back and when to push in close, creating a rhythm that keeps pages turning."

Patino R.

"Robert J. Perreault's writing is a breath of fresh air in the mystery genre! The intricate plots and rich settings keep me hooked from start to finish. A must-read for any mystery enthusiast!"

Reshawn S.

"I love how Robert J. Perreault brings characters to life with such depth and authenticity. Their journeys feel real, and I find myself fully invested in their stories. A true master storyteller!" 

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