A woman asks questions… …and finds answers that threaten her unborn childYoung and pregnant, Nova Ellis arrives in Mustang Valley, determined to find her missing father, Ace Colton. In her search, she uncovers that Nik Slater—the PI she’s just hired—is looking for the very same man. Immediately, Nova falls for Nik’s protective nature, a man who cares for her and her baby. But will unexpected danger and long-kept secrets draw them together…or shatter their dreams?

Two K-9 Unit novels from the New York Times–bestselling author of the Conard County series and the acclaimed author of the Coltons of Shadow Creek books. Missing in Conard County by Rachel Lee A stray dog just dropped a bone at animal control officer Allan Carstairs’s feet—a human bone. K-9 cop Kelly Noveno is certain it’s connected to a recent disappearance, but with a snowstorm bearing down on Conard County, the two must hunker down in Allan’s cabin to continue the search. But their long-held feelings are rushing to the surface, making this search more complicated than ever. Colton K-9 Cop by Addison Fox For bomb squad K-9 officer Donovan Colton, nothing about a failed car bombing in his Texas hometown makes sense. Why would anyone target quiet, secretive accountant Bellamy Reeves, and why does his canine partner instantly trust her? Donovan is searching for his own mysterious past, but he can’t resist solving the riddle that is beautiful Bellamy—even as their lives are poised to be blown apart . . .

A K-9 cop must risk it all to catch a killer After yet another groom-to-be is murdered in Red Ridge, K-9 cop Finn Colton comes up with a plan. He’ll fake an engagement to Darby Gage—to bait a criminal and investigate his suspect “fiancée.” It seems like the perfect solution—except for the intense chemistry between them. But after brutal attempts on both their lives, Finn worries that he’s endangered the woman he’s falling for. Can he protect Darby and convince her to make their engagement real? Previously published as Colton's Deadly Engagement

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? Harlequin® Romantic Suspense brings you all that and more with four new full-length titles in one collection! UNDERCOVER COLTON (A Coltons of Colorado novel) by Addison Fox Sami Evans has long suspected her father may not be entirely aboveboard. So she's not surprised when her one-night stand turns out to be an FBI agent. Dom Colton needs to get closer to Sami's father, but when Dom and Sami fake an engagement, he's realizing his feelings might be more than a cover. CAVANAUGH JUSTICE: DEADLY CHASE (A Cavanaugh Justice novel) by USA TODAY bestselling author Marie Ferrarella Embittered and broken detective Gabriel Cortland is forced to pair up with an optimistic partner to take down a prolific serial killer—the one who killed Gabriel’s pregnant wife. Gabriel is determined to work alone on this, but Shayla Cavanaugh knows how to break down his defenses. But with a killer on the loose, Gabriel's new lease on life may not last very long… COLD CASE COWBOY (A Cold Case Detectives novel) by Jennifer Morey When she finds refuge at his ranch, Indie Deboe struggles with her feelings for Wes McCann. She's lost everything before—to the same killer who could be a threat to both of them now! HOTSHOT HERO UNDER FIRE (A Hotshot Heroes novel) by Lisa Childs Hotshot firefighter/paramedic Owen James is in danger—and not from firefighting. Someone is trying to kill him, and he finds himself falling for the prime suspect!

Sparks fly when two ex-lovers must work together to investigate a suspicious marriage retreat, part of The Coltons of Mustang Valley series. True love, second chances… and a covert mission! With her family mired in legal trouble, Ainsley Colton turns to her ex, ace attorney Santiago Morales. Soon, Santiago asks for help in return…going undercover as husband and wife to expose a dangerous scam. Working alongside him reminds Ainsley of what can never be. This scheme should be hazardous only to her heart—but when the stakes ramp up, “till death do us part” becomes all too real. From Harlequin Romantic Suspense: Danger. Passion. Drama. The Coltons of Mustang Valley: Book 1: Colton Baby Conspiracy by Marie Ferrarella Book 2: Colton’s Lethal Reunion by Tara Taylor Quinn Book 3: Colton Family Bodyguard by Jennifer Morey Book 4: Colton First Responder by Linda O. Johnston Book 5: In Colton’s Custody by Dana Nussio Book 6: Colton Manhunt by Jane Godman Book 7: Colton’s Deadly Disguise by Geri Krotow Book 8: Colton Cowboy Jeopardy by Regan Black Book 9: Colton’s Undercover Reunion by Lara Lacombe Book 10: Deadly Colton Search by Addison Fox Book 11: Hunting the Colton Fugitive by Colleen Thompson Book 12: Colton’s Last Stand by Karen Whiddon

Dive into a dangerous world where serial killers and beauty pageants collide! From Geri Krotow, part of The Coltons of Mustang Valley series. When an investigation takes an unexpected turn... this undercover duo is on the case! When Bella Colton undergoes a makeover to enter a beauty pageant, she’s on a mission. She’s determined to find out why her best friend died. Enter undercover FBI agent Holden St. Clair. Holden’s hot on the heels of a serial killer, who has Bella in his crosshairs. As the chemistry between Bella and Holden sparks, can they capture the murderer in their midst? From Harlequin Romantic Suspense: Danger. Passion. Drama. The Coltons of Mustang Valley: Book 1: Colton Baby Conspiracy by Marie Ferrarella Book 2: Colton’s Lethal Reunion by Tara Taylor Quinn Book 3: Colton Family Bodyguard by Jennifer Morey Book 4: Colton First Responder by Linda O. Johnston Book 5: In Colton’s Custody by Dana Nussio Book 6: Colton Manhunt by Jane Godman Book 7: Colton’s Deadly Disguise by Geri Krotow Book 8: Colton Cowboy Jeopardy by Regan Black Book 9: Colton’s Undercover Reunion by Lara Lacombe Book 10: Deadly Colton Search by Addison Fox Book 11: Hunting the Colton Fugitive by Colleen Thompson Book 12: Colton’s Last Stand by Karen Whiddon

When a reluctant partnership Leads to a startling attraction. With a serial killer on the loose, FBI special agent Sinead Colton was assigned to work with Wells Blackthorne. The NYPD detective truly didn’t want her assistance on the Landmark Killer case, but lives were at stake. After a shooting and explosion, one of those lives just might belong to Wells. As guardian to his infant nephew, Wells had much to lose. And, Sinead soon realized, she had so much to protect. From Harlequin Romantic Suspense: Danger. Passion. Drama. Feel the excitement in these uplifting romances, part of The Coltons of New York series: Book 1: Colton's Unusual Suspect by Marie Ferrarella Book 2: Protecting Colton's Baby by Tara Taylor Quinn Book 3: Colton's Body of Proof by Karen Whiddon Book 4: Colton's Undercover Seduction by Beth Cornelison Book 5: Agent Colton's Secret Investigation by Dana Nussio Book 6: Under Colton's Watch by Addison Fox Book 7: Colton's Deadly Affair by Jennifer D. Bokal Book 8: Chasing a Colton Killer by Deborah Fletcher Mello Book 9: Protecting Colton's Secret Daughters by Lisa Childs Book 10: Colton's Montana Hideaway by Justine Davis Book 11: CSI Colton and the Witness by Linda O. Johnston Book 12: Colton's Yuletide Manhunt by Kacy Cross