Ascent into Hell (The Passover Trilogy)

Rogue Star (Starchild Trilogy)

Entering Tenebrea (Tenebrea Trilogy)

Titus Groan (Gormenghast Trilogy)

Probability Sun (The Probability Trilogy)

The Third Magic (Forever King Trilogy)

Bloodwars (Necroscope: Vampire World Trilogy)

Blood Brothers (Necroscope: Vampire World Trilogy)

Necroscope: Avengers (Necroscope: E-Branch Trilogy)

Starrise at Corrivale (Star Drive: Harbinger Trilogy)