Diana Cosby Books in Order

  • 15 Books
  • 2007 – 2020 Published

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Reading order
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How to Read Diana Cosby's Books

Diana Cosby has crafted three distinct historical romance series set in the medieval era, alongside a notable paranormal romance anthology contribution. Because each series features its own set of characters, storylines, and themes, the simplest and most satisfying way to read her books is in publication order within each individual series.

There is no overarching chronological order connecting the series together, so you can pick up any of the three major collections first. However, the internal storylines of each series build on character relationships and political intrigue, making order essential for the best experience.

The MacGruder Brothers Series

This is Cosby's flagship series that put her on the historical romance map. Starting in 2007 with her debut novel, the series follows the fiercely loyal MacGruder brothers as they navigate the turbulent landscape of medieval Scotland, fighting for their homeland and finding unexpected love along the way.

You should read the MacGruder Brothers books in their official publication order:

  • His Captive (2007)
  • His Woman (2008)
  • His Conquest (2010)
  • His Destiny (2011)
  • His Seduction (2013)
  • His Enchantment (2013)

The Oath Trilogy

Set against the backdrop of Scotland's war for independence, this trilogy explores deep themes of duty, honor, and forbidden romance. It is critical to read these books in order as they follow a continuous narrative thread.

The recommended reading order is:

  • An Oath Taken (2014)
  • An Oath Broken (2015)
  • An Oath Sworn (2015)

The Forbidden Series

Stepping away from traditional Highland clans, the Forbidden series introduces the mysterious and honorable Knights Templar. Weaving historical conspiracy, Irish nobility, and intense romance, this series follows knights who must balance their sacred vows against the desires of their hearts.

Read the Forbidden series in this order:

  • Forbidden Legacy (2016)
  • Forbidden Knight (2017)
  • Forbidden Vow (2018)
  • Forbidden Alliance (2019)
  • Forbidden Realm (2020)

Paranormal Romance and Anthologies

If you want a change of pace from Cosby's traditional medieval history, she contributed to a paranormal romance anthology titled Born to Bite (2012), which also features novellas by Hannah Howell and Erica Ridley. Cosby's contribution, "Highland Vampire", introduces Aedan MacGregor, the King of the Highland Coven, and Rowan Campbell. It can be read completely as a standalone.

What to Know Before You Start

Diana Cosby’s military background as a retired Navy Chief Petty Officer heavily influences her writing. Readers will find that her heroes and heroines possess a strong sense of honor, discipline, and loyalty that mirrors military values. The historical details are meticulously researched, providing a rich, atmospheric backdrop for her romance. While the books are highly romantic, they are also action-oriented, featuring plenty of political intrigue, battles, and suspense.

Frequently Asked

Where is the best place to start reading Diana Cosby?

The best place to start is with His Captive, the first book in the MacGruder Brothers series. It introduces her trademark blend of Scottish history, honor, and passionate romance.

Are Diana Cosby's books standalones?

While each book focus on a central couple's romance and reaches a resolution, the political subplots and character relationships carry over. It is highly recommended to read each series in order.

How many books are in the MacGruder Brothers series?

There are six novels in the MacGruder Brothers series, published between 2007 and 2013.

What is the order of the Oath Trilogy?

The Trilogy should be read as follows: 1. An Oath Taken, 2. An Oath Broken, and 3. An Oath Sworn.

Does Diana Cosby write paranormal romance?

Yes, Cosby wrote a paranormal short story titled "Highland Vampire" which was published in the 2012 anthology Born to Bite.