Note: There are other series with the same name: Grail Quest
- Series: Grail Quest (J. H. Brennan) Series Record # 17791
- Webpages: archive.org
- Grail Quest (J. H. Brennan)
- 1 The Castle of Darkness (1984) by Herbie Brennan [only as by J. H. Brennan]
- 2 The Den Of Dragons (1984) by Herbie Brennan [only as by J. H. Brennan]
- 3 The Gateway of Doom (1984) by Herbie Brennan [only as by J. H. Brennan]
- 4 Voyage of Terror (1985) by Herbie Brennan [only as by J. H. Brennan]
- 5 Kingdom of Horror (1985) by Herbie Brennan [only as by J. H. Brennan]
- 6 Realm of Chaos (1986) by Herbie Brennan [only as by J. H. Brennan]