Baron series
The Wild Baron 1981
The Offer 1981
The Deception 1983

The Bride series
The Sherbrooke Bride 1992
The Hellion Bride 1992
The Heiress Bride 1993
Mad Jack 1999
The Courtship 2000
The Scottish Bride 2001
Pendragon 2002
The SherBrooke Twins 2004
Lyon's Gate 2005
Wizards Daughter 2007
The Prince of Ravenscar 2011

Night trilogy
Night Fire 1989
Night Shadow 1989
Night Storm 1990

The Legacy series
The Wyndham Legacy 1994
The Nightingale Legacy 1995
The Valentine Legacy 1995

The Magic Trilogy
Midsummer Magic 1987
Calypso Magic 1988
Moonspun Magic 1988

Regency novels
The Countess 1978
The Rebel Bride 1997
The Heir 1980
The Duke 1997
Lord Harry 1997

Georgian novels
Devil's Embrace 2000
Devil's Daughter 2000

Contemporary Romantic Thrillers
False Pretenses 1988
Impulse 1990
Beyond Eden 1992

FBI Suspense Thriller series
The Cove 1996
The Maze 1997
The Target 1998
The Edge 1999
Riptide 2000
Hemlock Bay 2001
Eleventh Hour 2002
Blindside 2003
Blowout 2004
Point Blank 2005
Double Take 2007
Tail Spin 2008
Knock Out 2009
Whiplash 2010
Split Secon 2011
Backfire 2012
Bombshell 2013
Power Play 2014
Nemesis 2015

A Brit in the FBI series (with J.T. Ellison)
The Final Cut 2013
The Lost Key 2014
The End Game 2015