Where to Start Reading DiAnn Mills
For readers new to DiAnn Mills, the best starting point depends entirely on your preferred subgenre. If you love modern, fast-paced Christian romantic suspense with law enforcement themes, start with Breach of Trust (the first book in the acclaimed Call of Duty series) or Firewall (which kicks off the FBI: Houston series). Both showcase her signature blend of procedural detail, psychological tension, and faith elements.
If you prefer historical romance, the Texas Legacy series starting with Leather and Lace offers a wonderful entryway into her early career style, combining frontier drama with rich spiritual themes.
Contemporary Romantic Suspense Series
Call of Duty Series
This award-winning trilogy is many fans' favorite. The series follows strong female protagonists facing extreme danger and the law enforcement officers who work alongside them. Breach of Trust won the prestigious Christy Award, as did its sequel, Sworn to Protect. Read them in publication order:
- Breach of Trust (2009)
- Sworn to Protect (2010)
- Pursuit of Justice (2010)
FBI: Houston Series
Focused on the Houston FBI field office, this series delivers high-tech investigations, cybercrime, and deep personal dramas. They are best read in order to follow the character dynamics:
- Firewall (2014)
- Double Cross (2015)
- Deadlock (2015)
FBI Task Force Series
This series expands the investigative thrillers into complex federal operations. It features a prequel novella that sets up the team, making this a rare case where chronological order differs slightly from publication order:
- Trial By Fire (2016 - Novella / Prequel)
- Deadly Encounter (2016)
- Deep Extraction (2017)
- High Treason (2018)
Crime Scene: Houston Series
A duology that focuses on gritty local crime investigations and psychological suspense:
- The Chase (2012)
- The Survivor (2013)
Hope of Sudan Series
Inspired by the author's real-life travels to Sudan, this dramatic contemporary series follows aid workers and pilots navigating danger, faith, and relief efforts in a war-torn region:
- Long Walk Home (2019)
- Where Tomorrow Leads (2020)
Historical Romance & Legacy Series
Texas Legacy Series
Set in historical Texas, this series blends romance, mystery, and frontier challenges, concluding with a festive holiday addition:
- Leather and Lace (2006)
- Lanterns and Lace (2006)
- Lightning And Lace (2007)
- A Texas Legacy Christmas (2007)
Nebraska Legacy Series
Follows frontier stories in Nebraska. While the first three books were published sequentially in the mid-2000s, Mills returned to the setting nearly a decade later to write a fourth installment:
- Temporary Husband (2004)
- Kiowa Husband (2004)
- Renegade Husband (2005)
- Mail Order Husband (2013)
Texas Charm Series
One of Mills's earliest romance series, exploring faith and relationships in Texas:
- Country Charm (1999)
- Equestrian Charm (2000)
- Cassidy's Charm (2001)
Standalone Novels & Kaleidoscope Books
DiAnn Mills has written a significant number of standalone novels. These are excellent for readers who want a complete, self-contained suspense story without committing to a full series. Her modern standalones, such as Concrete Evidence, Facing the Enemy, and Lethal Standoff, offer high-stakes legal and criminal thrills. Meanwhile, her Kaleidoscope books are early-career romance releases that can be enjoyed in any order.
Practical Reading Advice
For almost all of DiAnn Mills's series, reading in publication order is highly recommended. The character relationships, FBI procedures, and recurring background characters build over time, particularly in the Houston-based FBI series. The only minor exception is the FBI Task Force series, where starting with the prequel novella Trial By Fire helps establish the team's dynamics before diving into the first full novel, Deadly Encounter.