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Fiona Quinn Books in Order

See every Fiona Quinn book in order, with brief summaries, series guides, and where-to-start tips across Lynx, Cerberus Tactical K9, and more.

Last updated: January 17, 2026

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48 books

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Tank

by Fiona Quinn

2026

Tank has finished his certification and is ready for his first real test as a Cerberus-trained tactical K9. When a new assignment puts lives on the line, Tank and his human partners learn quickly that courage and teamwork are not optional.

Trusted Instinct

by Fiona Quinn

2025

Journalist Auralia Rochambeau thinks she is chasing a simple charity scam until it turns violent. Trapped by a brutal storm and a bridge collapse in rural Virginia, she relies on Marine Raider Honoré 'Creed' Duchamp and his K9 Rougarou to survive.

Shielding Instinct

by Fiona Quinn

2025

FBI brain security researcher Dr. Petra Armstrong heads to St. Croix with multiple K9 teams, and danger follows her there. Ex-Green Beret Hawkeye Kesse is supposed to keep her safe while they chase a criminal family, but Petra refuses to play damsel.

Radar

by Fiona Quinn

2025

Dr. Elyssa Landers wants to help end world hunger, but her uncle's treason drags her into a deadly global conspiracy. DIA operative Xander Belov and his new K9 Radar have to stop a crime family's plan, while deciding whether Elyssa is an ally or a risk.

Sheltering Instinct

by Fiona Quinn

2024

WorldCares scientist Tess Dagomba is touring Namibia when she needs an emergency rescue, and the man who shows up is her first love. Former SEAL and K9 handler Levi Elliot has a dog to find and a woman to protect, whether she lets him or not.

Red Line

by Fiona Quinn

2024

CIA operative Johnna 'Red' is tasked with hunting a terrorist behind deadly attacks around the world. Her partner, Leeland 'Nomad' Kesling, is as dangerous as the mission and just as hard to ignore. To stop the next strike, they may have to cross their own red line.

Beowolf

by Fiona Quinn

2024

A certified K9 named Beowolf pulls two strangers into the same orbit just as a larger conspiracy tightens around Iniquus Panther Force. With danger closing in, they have to decide what to trust, the intel in front of them, or the dog that never misses a threat.

Striker

by Fiona Quinn

2023

Lexi Sobado is ready to marry Striker Rheas, but one problem stands in the way, she needs her divorce papers signed. To get them, Lexi has to track down the husband she believed was dead, and the search drags her back into dangerous secrets.

Marriage Lynx

by Fiona Quinn

2023

Lexi and Striker want a quiet wedding, but paperwork turns into a hunt when Lexi's first husband is not as gone as everyone thought. When a new crisis pulls the team toward the Pentagon, Lexi has to juggle love, law, and survival at once.

Hero's Instinct

by Fiona Quinn

2023

Ex-SEAL Asher Gideon works with Cerberus Tactical and his K9 Hoover, until a mission throws him back in orbit with CIA officer McKayla Pickard. The attraction is real, but so is the danger, and losing focus could get them both killed.

Guardian's Instinct

by Fiona Quinn

2023

Australian commando Basil 'Halo' St. John relocates to Washington, D.C., to build a new Cerberus Tactical K9 team for Iniquus, with his dog Max at his side. A mission to save a family pulls in a fearless civilian, and the new team gets tested fast.

A Guardian's Duty

by Fiona Quinn

2023

Ty Newcomb is sent in undercover with one goal, get close enough to Kira al-Attiyah to reach the terrorist she is promised to marry. Kira wants control of her own life, not another handler. Their forced partnership turns deadly fast.

Warrior's Instinct

by Fiona Quinn

2022

Hailey Stapleton's humanitarian work lands her in a warzone, and she needs help fast. Heath 'Ares' Sterling and his K9 Judge will do anything to get her out alive, including facing the past they never finished. Their second chance arrives under fire.

Rescue Instinct

by Fiona Quinn

2022

Ex-Navy SEAL Austin Mace and his K9 Diesel can handle chaos, but rescuing Dr. Tara Alvarez, his best friend's little sister, is a different kind of mission. With a hurricane closing in, old feelings and bad assumptions threaten their escape.

Fear the Reaper

by Fiona Quinn

2022

Ryan 'Reaper' Hamilton wants to focus on training K9s after years of combat, but a flash drive turns up and someone starts hunting for it. With his wife Kate caught in the fallout, Reaper has to uncover the truth before his new life is destroyed.

Hyper Lynx

by Fiona Quinn

2021

Lexi is ready to marry Striker, but her psychic abilities start firing warnings she cannot explain. As threats close in and trust gets shaky, Lexi has to sort real danger from noisy instincts before her team and her future fall apart.

Danger Zone

by Fiona Quinn

2021

War correspondent Remi Taleb expects danger, but not the kind that comes with riding shotgun for a U.S. senator into Beirut. T-Rex Landry is supposed to keep her alive, not fall for her. When their convoy becomes a target, the mission turns personal.

Danger Signs

by Fiona Quinn

2021

Delta Force operator Ty Newcomb has a brutal assignment, make Kira al-Attiyah fall for him so her fiancé, a high-value terrorist, will let Ty close. Kira does not know she's being used, and the closer they get, the more dangerous the lie becomes.

Danger Close

by Fiona Quinn

2021

Operator Jett is deep undercover in a remote, mountainous region when her team disappears. Her only link to help is a tactical K9 carrying a desperate message, and the clock is already running out. With Havoc at her side, Jett fights to bring them home.

Survival Instinct

by Fiona Quinn

2020

Dani Addams heads into the mountains on leave, hoping for quiet, until an unprecedented storm turns her hike into a fight for survival. Cerberus K9 handler Trip Williams and his dog Valor race to find her, and the rescue becomes personal.

Protective Instinct

by Fiona Quinn

2020

Artist Harper Katz is on the run after hearing something she should not have, and trusting anyone could get her killed. Ex-Delta Force operator Ridge Hansen and his tactical K9 Zeus are determined to protect her, even if she will not tell him what she is hiding.

Ours

by Fiona Quinn

2020

Kate thinks she understands the rules of her hometown until a fresh crime makes it clear someone is watching her moves. With the killer always one step ahead, Kate has to use her science brain and her instincts to protect the people she cares about and solve the puzzle.

Defender's Instinct

by Fiona Quinn

2020

CIA linguist Sabrin Harris expects a calm trip to Slovakia, until dozens of hostages disappear near her grandmother's home. Iniquus operative Ryder Kelly and his K9 Voodoo are sent in to help, and keeping Sabrin alive becomes as hard as solving the crisis.

Yours

by Fiona Quinn

2019

Kate Hamilton is trying to keep her head down in her Virginia hometown, but a new semester and a new case make that impossible. As she follows the evidence, Kate learns that small towns have long memories, and some people will do anything to keep the truth buried.

Open Secret

by Fiona Quinn

2019

FBI agent Rowan Kennedy is chasing a propaganda machine that weaponizes social media and video games. Romance editor Avery Goodyear is supposed to be an asset, not a target. Together they step into a dangerous psychological war where one wrong move can cost lives.

If You See Kay Shift

by Tina Glasneck

2019

Things get weird in Jamesburg when BJ and Kay run into shifter drama, a free spirit named Luna hunting for her Alpha, and their buddy Officer Tadger taking the bait. Then BJ finds a body, and the killer vanishes without a trace.

Gulf Lynx

by Fiona Quinn

2019

A kidnapping case in Syria would be hard enough on its own, but Lexi is also haunted by messages that may be coming from her dead husband. With a scientist running out of time, Lexi's gifts and her judgment are pushed to the limit.

Even Odds

by Fiona Quinn

2019

FBI Special Agent Damian Prescott needs to stop a terrorist threat, and the plan requires going undercover with Raine Meyers, the woman he lost once before. Their relationship has to look real, but the danger is, too. One mistake could cost everything.

Wasp

by Fiona Quinn

2018

A holiday gathering turns into a security nightmare, and a CIA station chief nicknamed Wasp is forced into damage control. With danger closing in from an unexpected direction, he and an unlikely partner have to improvise, stay alive, and stop the attackers.

Thorn

by Fiona Quinn

2018

Thorn Iverson is built for hard missions, not messy feelings. When a woman becomes leverage in a larger plot, Thorn throws himself into the chase, knowing one wrong move could cost her life and expose everything his team is trying to protect.

Relic

by Fiona Quinn

2018

A search for a priceless relic pulls an operative into a dangerous chase that is part archaeology, part counterterrorism. With a driven researcher who refuses to be sidelined, the mission becomes a race to recover the truth before the wrong people claim it.

InstiGator

by Fiona Quinn

2018

Gator Aid Rochambeau signed up for Iniquus work, not a mission that keeps putting a stubborn helicopter pilot in his path. When a high-stakes assignment turns personal, Gator and Christen Davidson have to decide if they can trust each other long enough to finish the job.

If You See Kay Lie

by Tina Glasneck

2018

BJ is out for a walk with her dog Twinkles when she trips over a dead body, and suddenly her life is anything but normal. With Kay at her side, she follows the lies back to their source before the killer circles back.

If You See Kay Jig

by Tina Glasneck

2018

BJ's carefully managed routine gets wrecked when Hooch shows up and nothing stays simple after that. With Kay riding shotgun, BJ tries to keep the bar running while they chase a new mystery that keeps stepping on their toes.

If You See Kay Bang

by Tina Glasneck

2018

BJ and Kay head to Texas for a friend's emergency wedding, but travel chaos hits hard, angry flight attendants, strange passengers, and even an unauthorized pygmy goat. When trouble follows them off the plane, BJ has to focus on surviving the weekend.

Deadlock

by Fiona Quinn

2018

An Iniquus mission stalls in the worst possible way, with hostages, hard choices, and a clock that will not slow down. Two people who do not trust easily are forced to work side by side, because a deadlock can be the start of a rescue, or the end.

Cuff Lynx

by Fiona Quinn

2018

Lexi and her mentor Spyder head out on a covert operation meant to stop a shadowy threat, but suspicion inside their own circle makes every move riskier. As they chase answers, Lexi has to decide who is safe to trust, and who is not.

Cold Red

by Fiona Quinn

2018

Anna's best chance to escape comes in the form of a car crash on an icy road, but she cannot leave the injured FBI agent behind. With terrorists and a winter storm closing in, Anna and Special Agent Steve Finley are forced into a tense fight for survival.

Jack Be Quick

by Fiona Quinn

2017

A fast-moving mission leaves no time for second guesses. When a woman on the run crosses paths with an operative who cannot walk away, they race through a web of threats and bad timing. The closer they get to safety, the more dangerous the truth becomes.

In Too Deep

by Fiona Quinn

2017

A covert operation goes sideways, and the only way out is to stay undercover with someone who was never supposed to be part of the plan. As enemies close in, two reluctant allies have to work together, because getting in too deep is easy, and getting out is not.

If You See Kay Run

by Tina Glasneck

2017

Bar manager Bobbi Jax, AKA BJ, and her best friend Kay haul a creepy mannequin to the bar as a joke, until it lights up social media and attracts the wrong kind of attention. With officer Peter Harris nearby, the prank turns into a case.

If You See Kay Hide

by Tina Glasneck

2017

BJ and Kay think they can handle anything their bar life throws at them, until a new mystery forces them to play amateur detective again. The harder they try to keep things quiet, the faster trouble finds them.

If You See Kay Freeze

by Tina Glasneck

2017

Darn Nicky Stromboli has BJ moonlighting as a winter elf, glitter tights and all. When the holiday gig goes sideways, BJ and Kay juggle bar drama, bad decisions, and a fresh mystery that needs solving before Christmas is ruined.

Weakest Lynx

by Fiona Quinn

2015

Lexi Sobado is young, brilliant, and trained in ways most people would never guess, including a psychic knack for patterns. When a threat locks onto her, Lexi has to lean on her instincts and the people who trained her before the hunt turns deadly.

Missing Lynx

by Fiona Quinn

2015

Lexi tries to build a normal life, but danger finds her again. Kidnapped and taken far from home, she has to use her unusual gifts and every bit of training she has earned to stay alive long enough for her allies to reach her.

Chain Lynx

by Fiona Quinn

2015

After Lexi is pulled from a plane wreck, she discovers the real danger is waiting at home. A powerful enemy is closing in, and Lexi's psychic edge may be the only thing that can keep her and her team alive.

Mine

by Fiona Quinn

2014

Science teacher Kate Hamilton flees Boston for the small Virginia town where she grew up, hoping to disappear and restart. Instead, Scarborough is rattled by untimely deaths, and Kate's new STEM CSI class becomes the perfect cover to investigate what everyone else is missing.

Chaos Is Come Again

by Fiona Quinn

2014

A literary agent named Avery is juggling work, family worries, and the chaos of the people around her, until a serial killer starts haunting the edges of her world. Darkly funny and uneasy at once, this psychological suspense story follows obsession, love, and the wreckage they can cause.

Where should I start?

If you want psychic-tinged spy suspense: Weakest LynxMissing LynxChain Lynx
If you want K9 rescue romance: Survival InstinctProtective InstinctDefender's Instinct
If you want special ops action abroad: Danger SignsDanger ZoneDanger CloseRed Line
If you want FBI conspiracies and tech intrigue: Open SecretCold RedEven Odds
If you want a cozy mystery with a science brain: MineYoursOurs

Author bio

Fiona Quinn is a Canadian-born writer of romantic suspense and mystery who builds her stories around people doing hard jobs under impossible pressure. Her books connect through her shared World of Iniquus, a place where special operators, intelligence professionals, and working dogs keep colliding with danger and with each other.

Her stories move fast, but they always make time for the human stuff.

Quinn has a habit of collecting skills the way some people collect souvenirs. She studied history, foreign language, and psychology, and later earned a master's in counseling. Before writing full time, she worked a mix of jobs that gave her an ear for how people talk when they are tired, scared, or trying to keep it together, from court-related crisis work to marketing, to a string of very normal gigs that make their way into her characters' backstories.

Travel shows up in her books for the same reason it shows up in her life, she is curious and she likes to learn by doing. She has talked openly about treating life like an ever-growing toolbox, picking up experiences, training, and facts that might make the next scene feel more real. That mindset also fits her stories, which often drop you into a mission with a clear objective and then complicate it with emotion, history, and the cost of doing the job.

One of the earliest sparks for her Iniquus world came from asking what kind of education could build a very different kind of problem solver. That question helped shape Lexi Sobado, the psychic-leaning strategist at the heart of Weakest Lynx, and it set the tone for a lot of what followed: smart characters, odd angles, and plots that mix field work with puzzles.

If you are new to her books, you can get a good read on her range just by sampling a few entry points. Survival Instinct leans into K9 rescue and survival stakes. Open Secret heads into modern espionage, where technology and influence campaigns can be as dangerous as weapons. Cold Red and Even Odds keep the pressure on with task force work and uneasy alliances. And titles like Red Line, Beowolf, and Radar show how she blends globe-spanning suspense with relationships that have to be built in the middle of chaos.

If a dog shows up in a Fiona Quinn book, it is not there for decoration.

Quinn also writes outside this main lane. She has published urban fantasy as Fiona Angelica Quinn, and she co-writes the Badge Bunny Booze mysteries with Tina Glasneck under the shared pen name Quinn Glasneck, a very different vibe that leans hard into comedy and fast, messy mysteries.

These days, she is rooted on Virginia's Atlantic coast with her family, balancing the realities of home life with the kind of research and imagination it takes to keep a long-running fictional world coherent. The result is a bibliography that is big on competence, loyalty, and the question her characters keep having to answer: who do you become when the mission is over?

Edited by

Richard Reis

Software engineer whose passion for tracking book recommendations from podcasts inspired the creation of MRB.

Anurag Ramdasan

Lead investor at 3one4 Capital whose startup expertise and love for books helped shaped MRB and its growth.

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All 48 Fiona Quinn Books in Order (Complete List 2026)