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Chronicles of Rhyacia Books in Order

Part ofThea Harrison Books in Order

See the Chronicles of Rhyacia books by Thea Harrison in order, with short summaries, series background, and a simple guide to where to start.

Last updated: July 6, 2026

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Chronicles of Rhyacia books in publication order

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2 books

1

The Unseen

by Thea Harrison

2020

Dragos and Pia leave New York for the Other land of Rhyacia, hoping to build a safer life for their family. Strange accidents and buried secrets soon reveal that something ancient is waiting for them there.

2

The Adversary

by Thea Harrison

2021

Rhyacia looks like the fresh start Dragos and Pia wanted, until an ancient force beneath the land breaks free. When the enemy can invade minds and turn anyone into a threat, nobody feels safe for long.

Chronicles of Rhyacia books in chronological order

  1. Book cover for "The Unseen"

    The Unseen

    by Thea Harrison

    2020Chronicles of Rhyacia, Book 1
  2. Book cover for "The Adversary"

    The Adversary

    by Thea Harrison

    2021Chronicles of Rhyacia, Book 2

Series background & context

The stories gathered here follow Dragos and Pia after a major shift in their lives. Instead of ruling and reacting from the familiar Wyr demesne in New York, they head into the Other land of Rhyacia to build something new for themselves and their family. That change gives this part of the Elder Races universe a very different feel.

At first, Rhyacia looks like a fresh start.

It is beautiful, open, and full of possibility, which is exactly why it feels unsettling when things start going wrong. In The Unseen, odd disturbances ripple through the land. Objects move on their own. Structures collapse without a clear cause. Rumors grow faster than answers. Dragos and Pia arrive hoping for safety and freedom, but what they find is a place with buried history and a threat that does not behave like the enemies they are used to fighting.

That is what makes this corner of the series interesting. The danger in Rhyacia is less about straightforward attack and more about atmosphere, hidden rules, and a sense that the land itself may be withholding the truth. Even very powerful characters do not fully understand what is happening, which gives the story a haunted, uneasy edge.

The emotional core still matters, though. These books are not just about mystery. They are also about a mated couple trying to protect their child, hold onto each other, and make good decisions while everything around them turns uncertain. Dragos is still formidable, Pia is still steady and sharp, and their family bond remains the thing that keeps the story grounded when the setting gets strange.

Then The Adversary turns the pressure up. What seemed eerie becomes more immediate and dangerous, especially once the force beneath Rhyacia proves it can strike with precision and exploit fear from the inside. The danger is not only physical. It is also psychological. Trust becomes harder. Safety starts to feel temporary.

That matters because these are linked stories, not loose standalones.

If you are coming to Rhyacia for more of the larger-than-life Dragos and Pia dynamic, you will get that. But you will also get a more serialized style of storytelling, with the first installment ending on a cliffhanger and the second carrying the weight of resolution. The emphasis is on discovery, survival, and the unsettling idea that a paradise can hide teeth.

In tone, these books sit somewhere between family saga, supernatural mystery, and paranormal adventure. They expand the Elder Races world without feeling like a simple return to familiar territory. Rhyacia is new ground, and Harrison treats it that way.

Start with The Unseen, then move straight into The Adversary. These stories are built to be read together.

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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