Harlequin Romantic Suspense October 2025 - Box Set

Looking for heart-racing romance and breathless suspense? Want stories filled with life-and-death situations that cause sparks to fly between adventurous, strong women and brave, powerful men?

THE UNKNOWN COLTON
by Lisa Childs

Returning home after being gravely injured on an oil rig, Troy Amos fears Lakin Colton is pulling away from him. Despite being in love since they were kids, their long-distance relationship has taken a toll. Fed up with waiting, Lakin’s pursuing her dream of creating a boutique hotel…without him. But Troy must put aside their personal troubles, because someone is stalking Lakin—and neither of them know if it’s the stranger claiming to be her real father or the serial killer terrorizing their Alaskan town…

COLORADO K-9 RESCUE
by Kathleen Donnelly

Years after being abducted, Mckenna Parker’s worst nightmare has come true—her kidnapper is out on parole. And he’s after her again. Now an FBI victim specialist, she and her crisis canine, Mocha, have been assigned to a case with FBI agent Evan Knox. Together they must find two local girls who disappeared. As passionate as Mckenna is about helping others, Evan is ambitious about his career. Both have sworn off love. But when Mckenna vanishes into the mountain wilderness, it’s Evan—with Mocha’s amazing help—who braves danger at all costs.

AGENT UNDER WRAPS
by Geri Krotrow

Marine turned security expert Willow O’Malley trusts her instincts. But she has no idea why she’s lusting after her new client, a CFO in an ill-fitting suit and thick glasses. Compelled to stick by Jay Lambert’s side night and day, her attraction remains a mystery…until she discovers that the dorky accountant is actually an FBI agent. Suddenly, their explosive attraction makes sense. If they can learn to trust each other, they might even have a future together. Unless the most powerful trafficking syndicate in the Pacific Northwest destroys them first.

AN INNOCENT HOSTAGE
by Deborah Fletcher Mello

FBI Agent Marcel Broussard knows recruiting PI Alexis Martin into his undercover cult rescue plan is risky. Their past is complicated, and she herself was the victim of the same cult in her youth—a group that’s currently trafficking babies. But saving his infant daughter depends on convincing the leader they’re married and fully indoctrinated. Soon, neither can deny their lingering feelings…even as their lives hang in the balance. Can Marcel trust the woman whose heart he broke to put aside the past and help him take down the evil in their midst?

Harlequin® Romantic Suspense brings you all that and more with four new full-length titles in one collection!