The Revolutions trilogy
Doctor Copernicus 1976
Kepler 1981
The Newton Letter 1982

Novels
Nightspawn 1971
Birchwood 1973
Mefisto 1986
The Book of Evidence 1989
Ghosts 1993
Athena 1995
The Ark 1996
The Untouchable 1997
Eclipse 2000
Shroud 2002
The Sea 2005
The Infinities 2009
Ancient Light 2012
The Blue Guitar 2015