- Series: Celta Series Record # 11901
- Series Tags: Futuristic romance (17), science fantasy (4), romance (1), paranormal romance (1)
- Celta
- 1 Heart Mate (2001) by Robin D. Owens
- 2 Heart Thief (2003) by Robin D. Owens
- 3 Heart Duel (2004) by Robin D. Owens
- 4 Heart Choice (2005) by Robin D. Owens
- 5 Heart Quest (2006) by Robin D. Owens
- 6 Heart Dance (2007) by Robin D. Owens
- 7 Heart Fate (2008) by Robin D. Owens
- 8 Heart Change (2009) by Robin D. Owens
- 9 Heart Journey (2010) by Robin D. Owens
- 10 Heart Search (2011) by Robin D. Owens
- 11 Heart Secret (2012) by Robin D. Owens
- 12 Heart Fortune (2013) by Robin D. Owens
- 13 Heart Fire (2014) by Robin D. Owens
- 14 Heart Legacy (2015) by Robin D. Owens
- 15 Heart Sight (2017) by Robin D. Owens
- 16 Script of the Heart (2018) by Robin D. Owens
- Heart and Soul (2011) [SF] by Robin D. Owens
- Noble Heart (2011) [SF] by Robin D. Owens
- Heart Story (2011) [SF] by Robin D. Owens
- Heart and Sword (2011) [SF] by Robin D. Owens
- Hearts and Swords (2011) [C] by Robin D. Owens
- Lost Heart (2016) [SF] by Robin D. Owens
- HeartStones (2017) [SF] by Robin D. Owens
- Hearts and Stones: Stories of Celta (2020) [C] by Robin D. Owens
- Homing Stone (2020) [SF] by Robin D. Owens
- Fractured Stone (2020) [SF] by Robin D. Owens
- Hidden Stone (2020) [SF] by Robin D. Owens
- Stone in Zanth's Paw (2020) [SF] by Robin D. Owens
- Passage Through Stone (2020) [SF] by Robin D. Owens