A Little Gray Book of Alien Stories

2004

Bride of the Castle

1994

Castle Dreams

1992

Castle Kidnapped

1989

Castle Murders

1991

Castle Perilous

1988

Castle Spellbound

1992

Castle War!

1990

Castle for Rent

1989

Dr. Dimension

1993

From Prussia with Love

A Castle Falkenstein Novel

1995

Innerverse

1996

Living With Aliens

1995

Masterminds of Falkenstein

A Castle Falkenstein Novel

1996

Masters of Spacetime

1994

Paradox Alley

1987

Red Limit Freeway

1984

Starrigger

1983

The Kruton Interface

1993

The Pirates of Perilous

2015

Witchblade

Talons

2002