Diana Tregarde Books in Order

The Diana Tregarde books are urban fantasy with an occult-detective spine. Diana is a successful romance novelist, but that is only the job that pays the bills. Her real work is being a Guardian, someone called to protect ordinary people from supernatural threats they usually cannot see until it is far too late.

That setup gives the series a nice balance. Diana is not a teenager discovering magic for the first time, and she is not a cop with a badge and backup. She is an adult who already knows the hidden world is real, already has skills, and still has to think her way through each new mess. She researches, bargains, wards, improvises, and takes risks when there is no clean option.

The books mostly work as separate cases. In Burning Water, Diana is drawn into ritual murders and dangerous Aztec magic while helping detective Mark Valdez. Children of the Night brings her to New York and into uneasy alliance with the vampire Andre LeBrel. Jinx High turns to teenage power games in Tulsa, where popularity, sorcery, and a sleeping ancient force make a bad combination. The later short work, including Killer Byte, keeps that same case-driven feel, just in a smaller space.

Diana is competent, but never casual about the cost.

What links the series is not one giant end-of-the-world storyline. It is Diana herself, and the idea that evil shifts shape depending on where you find it. Sometimes it looks like a serial killer using old gods for leverage. Sometimes it looks like vampires, possession, or the ugly magic of a cruel social circle. The threats change, but Diana's job stays the same. She stands between vulnerable people and whatever is hunting them.

The tone is darker than some of the other Elves on the Road branches. These books lean into fear, folklore, and the practical details of occult work. They are also very rooted in their cities, which gives them a lived-in feel. Dallas, New York, Tulsa, and the later Harvard-set prequels collected in Magic 101 all matter as places, not just backdrops.

If you want an early urban fantasy series with a grown woman at the center, this is a strong place to go. The pleasures are clear ones: a capable lead, self-contained supernatural mysteries, and a world where myth keeps breaking into modern life in very inconvenient ways.