Skip to product information
1 of 3

Silver Gravity Books

Echoes of The Past: The Dark Horizon Series, Book 4 - Jordan Fox

Echoes of The Past: The Dark Horizon Series, Book 4 - Jordan Fox

Regular price £30.00 GBP
Regular price Sale price £30.00 GBP
Sale Sold out
Taxes included.
Format

Action & adventure, Thriller & suspense, and Romance

Book Number in Series

FREE instant Ebook version with every hardback, paperback or audio sale!

EBOOKS ARE DELIVERED INSTANTLY. YOUR DOWNLOAD LINK ARRIVES BY EMAIL RIGHT AFTER CHECKOUT. PAPERBACKS/HARDBACKS ARE PRINTED TO ORDER AND TYPICALLY SHIP IN 3–7 DAYS.

Quantity

When Past Wounds Reopen, Can Love Survive a Deadly Reunion?

Dive into Echoes of the Past, the fourth heart-pounding installment in Jordan Fox's Dark Horizon Series. This explosive romantic thriller reunites old flames in a dangerous dance of secrets, betrayal, and passion that proves some connections can never truly be broken.

Seraphina "Sera" Caldwell traded her nursing scrubs for tactical gear years ago, using her medical expertise and fierce determination to protect the vulnerable as a skilled mercenary. She's built a new life from the ashes of her past—a past that includes the man who shattered her heart and disappeared without explanation.

When Jack Westbrook suddenly materializes in Hong Kong with a target on his back and a warning on his lips, Sera's carefully constructed world implodes. The powerful crime syndicate they once fought has joined forces with the sinister Dark Horizon network, and now both Sera and Jack are marked for elimination. Despite her fury at his betrayal, Sera has no choice but to run with the only man she's ever loved—and the only man who ever abandoned her.

From the neon-soaked streets of Hong Kong to a secluded sanctuary in the Philippine Islands, Sera and Jack navigate a minefield of emotions as deadly as the bullets chasing them. As layers of deception fall away, revealing the truth behind Jack's disappearance, they must confront the question that haunts them both: Can love forged in fire survive the coldest betrayal?

Perfect for fans of:

  • Reunited lovers fighting against impossible odds
  • High-octane action with emotional depth
  • International settings rich with danger and intrigue

Jordan Fox's Echoes of the Past delivers pulse-racing suspense and soul-stirring romance that will keep you breathless until the very last page. Don't miss this addictive, edge-of-your-seat thriller.

ABOUT THE SERIES

Step into the gripping universe of The Dark Horizon Series, where Jordan Fox masterfully blends high-stakes action, thrilling conspiracies, and swoon-worthy romance. This electrifying collection of romantic action thrillers delves deep into the hidden forces that manipulate society, uncovering webs of deceit, corruption, and control on a global scale.

In the world of Dark Horizon, unseen powers pull the strings behind corporate espionage, political influence, and even environmental crises. Each standalone novel follows fearless protagonists from different walks of life, who risk everything to expose these shadowy conspiracies—facing layers of deception, moral dilemmas, and personal sacrifice.

If you love edge-of-your-seat thrillers packed with intrigue, danger, and heart, The Dark Horizon Series will leave you breathless.

SERIES READING ORDER

The Dark Horizon Series in Order

  • Book 1: Dangerous Numbers
  • Book 2: Double Deception
  • Book 3: Undercover Love
  • Book 4: Shadows and Steel
  • Book 5: Echoes of the Past
  • Book 6: Beneath the Surface
  • Book 7: Desert Shadows
  • Book 8: Operation Midnight
  • Book 9: Guardian of Secrets
  • Book 10: In the Wild
  • Book 11: Deep Red Threat
  • Book 12: Storm of Deception

READ A SAMPLE

Book in production.

Meet the Author

Jordan Fox has got a personality all her own!  Jordan is the voice of adventure and intrigue, bringing her love of espionage, high-stakes thrills, and cultural mysteries to life in every page of her Dark Horizon Series.

With a spirit as bold as her heroines, Jordan’s stories are packed with intense action, witty banter, and a fearless dive into global conspiracies. She’s the kind of writer who thrives on adrenaline and the unknown, drawing inspiration from hidden alleyways, ancient ruins, and the thrill of adventure in every corner of the globe.

The Dark Horizon Series plunges you into a world where powerful figures pull the strings from the shadows, manipulating everything from technology to personal freedoms. Jordan’s characters don’t just stumble upon danger—they run straight toward it, unafraid to challenge corruption and fight for justice.

So, if you’re ready to escape into a world of heart-racing romance and pulse-pounding suspense, let Jordan Fox be your guide. With her, every book is a journey into the secrets of The Dark Horizon—and you’re invited to uncover them all!

Tropes You'll Love

Shadowy syndicate, lethal operatives, and women too clever to stay kidnapped — each book pairs a dangerous mission with a dangerous attraction.

Spy / Action-Thriller Tropes

  • Shadowy global conspiracy – a network (Dark Horizon) pulling strings behind governments.
  • Off-the-books missions – ops that can’t be traced, plausible deniability.
  • Rogue agents & double-crosses – “We had a leak,” “Someone on the inside sold us out.”
  • Mistaken / stolen identities – perfect for Double Deception.
  • Tech + intel heroine – data, numbers, or code that can topple people (Dangerous Numbers vibe).
  • Ticking-clock missions – stop the shipment, expose the vote, retrieve the drive.

Romantic Suspense / Romantic Thriller Tropes

  • Forced proximity on a mission – posing as a couple, travelling together, safe-house nights.
  • Bodyguard / protector energy – “I’ll keep you safe, but do what I say.”
  • Partners to lovers – start professional, end permanent.
  • Enemies / rivals to lovers – “You’re from the wrong agency” → “Fine, we work together.”
  • Trust vs betrayal – love is risky when everyone lies for a living.

Secrets & Past-Catching-Up Tropes

  • Haunting past opEchoes of the Past signals trauma or unfinished business.
  • Underwater / hidden evidenceBeneath the Surface = secrets literally buried.
  • Desert mission gone wrongDesert Shadows = ambush, extraction, survival.
  • Midnight op / blackout missionOperation Midnight = stealth, no comms.
  • Keeper of classified infoGuardian of Secrets = someone is the vault.

Series / Team Tropes

  • Elite but damaged team – each book follows a different operative.
  • Found family in a covert unit – they bicker, but they show up.
  • Slow reveal of the big bad – every book pulls back another layer of Dark Horizon.
  • Competence porn – smart women, lethal men, everyone good at their job.

Vibes to market

  • high-heat, high-stakes
  • spies + romance

• • secrets, safe houses, foreign cities, and one bed, within reason (:))

Audio Book Sample

Book in production.

Other Book Details

romantic
espionage series, romantic thriller books, female-led spy thrillers, action
romance novels, secret agent romance, undercover romance, bodyguard romance
thriller, partners-to-lovers romantic suspense, enemies-to-lovers in a
thriller, forced-proximity spy romance, woman-in-danger protection romance,
elite operatives romance series, secret organisation thriller, high-stakes
international romance, covert-operations romance book, spy-falls-for-partner
thriller, she’s-the-hacker-he’s-the-agent romance, dangerous missions and
slow-burn romance, trust-no-one romance, off-the-books operation, one mission
one bed, the spy who shouldn’t fall in love, every book a new couple same
conspiracy

FAQs

View full details
1 of 2