A Diana Tregarde Investigation book cover

A Diana Tregarde Investigation Series in Order

The Diana Tregarde Investigation series can be read in any order, though starting with Burning Water provides the clearest introduction to the setting and recurring characters. Diana Tregarde, a practicing witch and private investigator, uses her magic to solve supernatural crimes in the modern world.

🟡 Mostly Standalone · Start Anywhere

A Diana Tregarde Investigation Books in Order

7 books total 4 main + 3 companion books

Complete reading order for the Diana Tregarde Investigation series.

#
Title
Date
Rating
1
Feb 1989
3
Oct 1991
Nov 1989
Apr 1994

How to Read the Diana Tregarde Investigation series

🟡 Mostly Standalone · Start Anywhere

Mostly standalone stories with recurring characters in a shared setting.

The Diana Tregarde Investigation series does not need to be read in order. Each book tells a complete story with its own resolution focused on a distinct case. Continuity is limited to recurring characters and the shared modern world with magic. Reading out of order does not cause confusion, as every book clearly establishes Diana’s role and situation while offering extra enjoyment for those familiar with her background as a Guardian.

About the Diana Tregarde Investigation series

Series Premise

The Diana Tregarde Investigation series follows Diana Tregarde as she handles dangerous cases involving magic, demons, and the occult. Each book presents a new mystery that blends detective work with her skills as a witch and Guardian protecting the innocent from supernatural threats.

Main Characters

The series centers on Diana Tregarde, a strong and resourceful witch who works as a private investigator. She is supported by a network of friends and allies who assist her in handling supernatural cases.

Setting

The stories take place in contemporary American cities where magic and the occult exist alongside everyday life.

Tone & Themes

The tone is suspenseful and character-driven with elements of urban fantasy. Central themes include protecting the innocent, the responsible use of magic, courage in the face of darkness, and balancing ordinary life with supernatural responsibilities.

Is This Series Worth Reading?

This series appeals to readers who enjoy urban fantasy mysteries, strong female protagonists, and stories blending detective work with magic.

Content Warnings and Heat Level

Includes supernatural violence and occult themes; mild romantic elements. Suitable for adult readers.

The Diana Tregarde Investigation series offers self-contained supernatural cases featuring a skilled witch detective. Readers can start with any book and enjoy a complete investigation while exploring Diana’s world.

FAQ

How many books are in the Diana Tregarde Investigation series?

7 books total: 4 main + 3 companion books

When will the next book in the series be released?

No new book is currently scheduled. The latest book, Trio of Sorcery, was published in November 2010.

When was the most recent book released?

Trio of Sorcery was published in November 2010.

What was the first book in the series?

The first book in the series is Burning Water, published in February 1989.

What genre is the Diana Tregarde Investigation series?

The series primarily falls into the genre.

Do you need to read the Diana Tregarde Investigation series in order?

No, the books do not need to be read in order. Each story stands on its own, but recurring characters and the shared setting connect the series.

What is the Diana Tregarde Investigation series about?

The Diana Tregarde Investigation series follows Diana Tregarde as she handles dangerous cases involving magic, demons, and the occult. Each book presents a new mystery that blends detective work with her skills as a witch and Guardian protecting the innocent from supernatural threats.

Is the Diana Tregarde Investigation series finished?

The series does not currently have a new book scheduled.