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Explore the Tracers books by Laura Griffin in order, with quick summaries, character and series background, and easy advice on where to start.

Last updated: June 8, 2026

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Publication Order

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14 books

1

Untraceable

by Laura Griffin

2009

Cyber-savvy investigator Alex Lovell helps women disappear from abusive lives, then a woman she once aided vanishes for real. Homicide detective Nathan Devereaux doubts her theory at first, but the search soon exposes a far deadlier crime.

2

Unforgivable

by Laura Griffin

2010

DNA expert Mia Voss becomes the target of a killer and starts tearing down her own reputation to protect the people she loves. Detective Ric Santos knows the key lies in an old case Mia has never truly escaped.

3

Unspeakable

by Laura Griffin

2010

FBI rookie Elaina McCord joins a Texas beachside murder investigation and becomes convinced a seasoned serial killer is at work. When the killer starts taunting her, a reckless true-crime writer may be her best chance to stay alive.

4

Snapped

by Laura Griffin

2011

After surviving a campus shooting, Delphi Center scientist Sophie Barrett suspects the attack was anything but random. Detective Jonah Macon thinks her theory sounds impossible, until the evidence turns her into the next target.

5

Scorched

by Laura Griffin

2012

Forensic anthropologist Kelsey Quinn finds her work colliding with a murder case tied to her ex-fiance, Navy SEAL Gage Brewer. As threats mount, they uncover a conspiracy with consequences far beyond one body.

6

Twisted

by Laura Griffin

2012

Small-town detective Allison Doyle is desperate to prove herself when a savage murder rattles her department. An FBI profiler's unsettling theory draws her into a hunt for a predator who may be far cleverer than anyone guessed.

7

Unstoppable

by Laura Griffin

2012

In this novella, forensic anthropologist Kelsey Quinn uncovers something deadly during a dig in a remote Texas border region. Navy SEAL Gage Brewer is the one person tough enough to help her survive what she has found.

8

Exposed

by Laura Griffin

2013

Forensic photographer Maddie Callahan may have accidentally captured a witness kidnapping on camera. FBI agent Brian Beckman needs her help fast, because the same criminal he is hunting may now be hunting her.

9

Beyond Limits

by Laura Griffin

2015

FBI agent Elizabeth LeBlanc and Navy SEAL Derek Vaughn reunite when evidence points to a terror cell on American soil. Working with the Tracers, they race to stop an attack before personal history clouds the mission.

10

Shadow Fall

by Laura Griffin

2015

FBI agent Tara Rushing arrives in East Texas to investigate a murder that looks like the work of a serial killer. Her prime suspect, security expert Liam Wolfe, may be dangerous, innocent, or both.

11

Deep Dark

by Laura Griffin

2016

A murdered woman, a strange text, and an old dating profile pull detective Reed Novak into a case that feels personal. Hacker Laney Knox sees links to her own past, which may make her the killer's next move.

12

At Close Range

by Laura Griffin

2017

Detective Daniele Harper catches a brutal double murder and turns to the Delphi Center for help. Ballistics expert Scott Black knows the case is dangerous, but keeping his distance from Dani may be harder than catching the killer.

13

Touch of Red

by Laura Griffin

2017

Crime scene investigator Brooke Porter finds signs that someone escaped a savage murder scene, but the witness has vanished. Detective Sean Byrne joins the search, and the closer they get, the more exposed Brooke becomes.

14

Stone Cold Heart

by Laura Griffin

2019

When human bones are found in a remote Texas gorge, forensic anthropologist Sara Lockhart is called in to identify the victim. The clues echo a case from her past and point toward a killer who is not finished.

Series background & context

This is the series most readers think of first with Laura Griffin, and it is easy to see why. The Tracers books revolve around the Delphi Center, a private forensic lab built out of grief, anger, and a need to do better than the system once did. In Griffin's story world, a wealthy Texas family lost a teenage daughter after evidence from older assaults was not processed in time. That failure becomes the reason the lab exists.

The name Tracers tells you what these books care about. Tiny fibers. DNA. Ballistics. Digital trails. Bones. Blood. The things killers miss, ignore, or never even notice. The experts at the Delphi Center step in when regular police work stalls or when a case needs specialist help. That makes the series feel bigger than one detective's career. Different books spotlight different kinds of expertise, and Griffin clearly enjoys showing how each skill changes an investigation.

So the cast shifts, but the world holds together. You get cyber investigators like Alex Lovell and Laney Knox, forensic scientists like Mia Voss, photographers like Maddie Callahan, anthropologists like Kelsey Quinn and Sara Lockhart, and trace evidence specialists like Brooke Porter. Around them are homicide cops, FBI agents, profilers, writers, and former military people who keep getting pulled into cases that are too violent or too strange to ignore.

The crimes vary a lot. Some books lean into serial killers. Some focus on cold cases, disappearances, kidnappings, or online predators. Some add a national security thread. But the shared promise is consistent, smart people using real methods to chase people who believe they have covered their tracks. The romance matters, yet the investigation is never just wallpaper. If you come for the lab work, the books deliver.

Another strength of the series is that it can be read two ways. In order, it rewards you with returning characters, growing trust inside the Delphi network, and small connections that pay off later. Out of order, most books still work because each centers a fresh pair and a self-contained case. That is part of why the series stayed durable across thirteen core books and a novella.

Tonally, these are romantic thrillers with a procedural backbone. They are not dry police novels, and they are not pure romance in disguise. Griffin likes competent adults, dangerous jobs, and clues that come from careful work instead of lucky guesses. If that mix sounds good, start with Untraceable and keep going. The Tracers books are where her blend of forensics, tension, and emotion really locks into place.

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 14 Tracers Books in Order (Complete List 2026)