Here are the books in the "Fire Within" series, which is currently ongoing:
1. The King's Shadow (Blood and Ash, #6.5) - This novella bridges the gap between "Blood and Ash" and the "Fire Within" series.
2. A Shadow in the Ember (Fire Within, #1)
3. A Light in the Flame (Fire Within, #2)
4. A Touch of Smoke (Fire Within, #3)
5. A Whisper of Fire (Fire Within, #4) (Coming Soon)
Note: The "Fire Within" series is a spin-off from the "Blood and Ash" series, so it is recommended to read the books in the "Blood and Ash" series first.
If you're looking for the complete list of books in the "Blood and Ash" series, it's as follows:
Blood and Ash Series:
1. A Court of Thorns and Roses (A Blood and Ash, #1)
2. A Kingdom of Flesh and Fire (A Blood and Ash, #2)
3. The Crown of Gilded Bones (A Blood and Ash, #3)
4. The War of Two Queens (A Blood and Ash, #4)
5. The Stolen Heir (A Blood and Ash, #5)
6. The Heart of Stone (A Blood and Ash, #6)
7. The King's Shadow (A Blood and Ash, #6.5) - This novella bridges the gap between "Blood and Ash" and the "Fire Within" series.
8. A Shadow in the Ember (Fire Within, #1) - This is the first book in the "Fire Within" series, a spin-off from "Blood and Ash."
Let me know if you have any other questions!