Blood Money
Lock N' Loaded
Armed N' Ready
Dark N' Deadly
Trap 'N' Trace - smaller size
Serve 'N' Protect
Honor 'N' Duty
Above 'N' Beyond
Tough Justice
Burning Justice
Ultimate Justice


"Forbidden slow-burn love, danger, lies, betrayal, mob family drama; there's so much good stuff packed into this read... ABOVE 'N' BEYOND ends an addictive series with a bang and gives readers a very satisfying conclusion." - FRESH FICTION

"Above ‘N’ Beyond is fast-paced, addicting, and suspenseful, with a bit of steam for the romance lovers. The ending was explosive and capped off this series perfectly!... O'Fallon is the queen of the K-9 Cops! 5 FAB STARS!!" ⭐️⭐️⭐️⭐️ - A Midlife Wife

Above 'N' Beyond

Deep Secrets. Deadly Truths.

Getting locked up had been easy. But for K-9 Sergeant Jamie Pataglio, going undercover at a maximum-security prison—and infiltrating the Mancusco crime family—was the hard part. Now, six months later, Jamie’s been accepted as one of the mob’s own, and he’s walking out of the gates as a free man…and stepping into the criminal underworld. There’s only one small, gorgeous problem: Bella Bianco.

The Italian bistro used to be Bella’s pride and joy. Now it’s become a nightmare, where her violent family uses her restaurant as its criminal home base. Guilty by association. She needs to find a way out, and fast. The last thing Bella needs is an attraction to their newest “associate”—even if every moment alone with him leaves her breathless. It’s almost enough to make her reconsider her “no mobsters” policy…

They can’t trust each other. But if either of them ever wants to break free of their circumstances, they don’t have a choice. They’ll have to take down her family. And if anyone finds out they’re working together…they’re both dead.

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“great characterization, action, suspense, attraction, arson, and danger" - MYSTERY & SUSPENSE MAGAZINE 

“Tee O’Fallon heats the pages up in BURNING JUSTICE, giving us arson, murder, mystery, and a delicious slow-burn romance… Gemma and Brett’s chemistry absolutely sizzles on the pages.” - FRESH FICTION

"Holy smokes, grab an extinguisher! The handsome alpha ATF agent combined with the strong-willed, independent woman gets the heat rising quickly in "Burning Justice". Tee O'Fallon deserves kudos" - InD'tale Magazine

Burning Justice, K-9 Special Ops

Some cases are hot enough to kill.

After narrowly surviving a childhood fire that killed two of his friends, ATF Special Agent Brett Tanner knows what it’s like to get too close to the flame. The trauma only spurs him and his K-9 partner to track down the arsonists targeting a Colorado town. This latest warehouse blaze looks suspicious as hell…and there’s a body. Now it’s murder

Fiercely independent insurance investigator Gemma Scott has been burned enough times to know she doesn’t need anyone—especially a handsome agent with an agenda. Teaming up with the hardened and determined ATF agent means not just trusting her instincts…it also means trusting him.

Now they’re racing against an arsonist with a lethal agenda—one who’s willing to burn and kill to hide the evidence. But the killer is only part of a larger mystery. And the searing attraction between Gemma and Brett adds fuel to an already dangerously lethal fire. One that will smoke out a killer…along with Brett’s darkest secret.

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Tough Justice, K-9 Special Ops


"O’Fallon’s 23 years of experience as a federal agent shows in her attention to detail, and she peppers her fast-paced plot with plausible red herrings, keeping readers guessing right up until the pulse-pounding finale. Readers won’t want to put this one down."

"An appealing romantic couple drive this fast-paced, diverting crime tale." - Kirkus Reviews

It should have been a routine investigation. Instead, DEA K-9 agent Adam “Deck” Decker watches in horror as one Denver hospital seems to be Ground Zero for overdoses of a new drug. Now Deck can only hope a certain icy, green-eyed ER doctor will help him and his canine partner track down the deadly source.

Dr. Tori Sampson has her reasons for not trusting federal agents, especially ones working for the DEA. But the rash of overdoses—including a heartbreaking case involving a teen—is alarmingly high. And the new opioid is not only extremely dangerous, it defies all the usual medical treatments. So Tori has a choice: work with the big, brawny, and annoyingly hot DEA agent…or watch more innocent people die.  

Tori’s the only person who can help Deck break the case, and they’ll need to trust each other, no matter how high the tension and attraction sizzling between them runs. But with every question answered, they realize there’s something more behind these typical teen overdoses. There’s a pattern here and a pattern can only suggest one thing. There’s a killer on the loose.



Honor 'N' Duty

Some secrets should stay hidden.

Two years after his brother’s murder in jail, Department of Homeland Security K-9 Officer Kade Sampson is still haunted by guilt. No man should ever have to arrest his own brother, even if he is laundering money for a drug cartel. Fortunately, Laia Velez—his brother’s gorgeous widow—never learned the truth about Kade’s involvement. But when she asks him for help, he knows that trouble with the cartel is far from over…

Kade is the last person Laia wants to call. But between her house being thoroughly trashed and the uneasy sense that she and her young daughter are being watched, Laia isn’t taking any chances. The cartel wants something from her. And Kade and his K-9 partner, Smoke, are her only chance to survive whatever fresh hell is coming their way…

Now Laia and Kade are trying to stay one step ahead in a game that’s growing more deadly by the minute. But what the cartel wants, the cartel gets. And Kade is running out of time to save the woman he loves from the same fate that killed his brother…

Serve 'N' Protect

Secrets are everywhere.

Ambushed and left for dead, U.S. Secret Service K-9 Officer Markus York is on the mend and laying low in a safe house while his team tracks down his attacker. But Markus isn’t good at sitting still. Even with his K-9, Ghost, for company, he gets restless and decides now is the perfect time to do some repairs around the house…and inadvertently tears open his wounds.

Fresh out of a bad relationship that ended after a car accident left her with limited mobility, freelance accountant Cassidy Morgan has sworn off men. At least, that’s the plan. Until a frantically barking dog leads her to a neighbor’s house where she finds a mysterious man out cold and bleeding on the floor...and mumbling things like “no, they’ll find me” when she tries to call an ambulance.

Yeah, that’s not at all concerning.

Despite Markus’s surly attitude, Cassidy senses there’s something else at work beneath his rugged, keep-your-distance exterior. Whatever it is, it’s sexy as hell.

With someone still trying to kill him, Markus doesn’t want an innocent to get hurt, let alone take care of him.

If only his dog wasn’t crazy in love with her.

If only the chemistry between Markus and Cassidy didn’t explode whenever they were in the same room.

If only Cassidy wasn’t a target now, too.