Love Spell
1. Second Chance (1994)

Rock Creek Six
1. Reese (2001)
3. Rico (2001)
5. Nate (2002)
The Rock Creek Six (omnibus) (2012)

Luchetti Brothers
1. The Daddy Quest (2003)
2. The Brother Quest (2004)
3. The Husband Quest (2004)
4. A Soldier's Quest (2005)
5. The Mommy Quest (2006)
     aka A Mom for Tim

Night Creature
1. Blue Moon (2004)
2. Hunter's Moon (2005)
3. Dark Moon (2005)
4. Crescent Moon (2006)
5. Midnight Moon (2006)
6. Rising Moon (2007)
7. Hidden Moon (2007)
8. Thunder Moon (2008)
9. Marked By The Moon (2010)
10. Moon Cursed (2011)
11. Crave The Moon (2011)
Red Moon Rising (2004) (in Stroke of Midnight)
Charmed by the Moon (2006) (in My Big Fat Supernatural Wedding)
Shadow of the Moon (2011)

Phoenix Chronicles
1. Any Given Doomsday (2008)
2. Doomsday Can Wait (2009)
3. Apocalypse Happens (2009)
4. Chaos Bites (2010)

Shakespeare Undead
1. Shakespeare Undead (2010)
2. Zombie Island (2012)

Shadow Lover (1995)
Charlie and the Angel (1995)
Full Moon Dreams (1996)
Dreams of an Eagle (1998)
Just After Midnight (1999)
Mother of the Year (2000)
     aka Out of Her League
When You Wish (2000)
Loving a Legend (2000)
Doctor, Doctor (2001)
Leave It to Max (2001)
An Outlaw for Christmas (2001)
A Sheriff in Tennessee (2002)
The Farmer's Wife (2002)
When Midnight Comes (2010)

Trick or Treat (1997) (with Lark Eden, Stobie Piel and Lynda Trent)
The Farmer's Wife / Dreamless (2002)
Then He Kissed Her (2003) (with Kate Donovan and Julie Moffett)
Wrong Man / Daddy Quest (2004) (with Laura Abbot)
Family of Her Own / Brother Quest (2004) (with Brenda Novak)
Husband Quest / Operation - Texas (2004) (with Roxanne Rustand)
Stroke of Midnight (2004) (with Amanda Ashley, L A Banks and Sherrilyn Kenyon)
Dates from Hell (2006) (with Kelley Armstrong, Kim Harrison and Lynsay Sands)
Mothers of the Year (2008) (with Anna DeStefano and Rebecca Winters)

My Big Fat Supernatural Wedding (2006) (with L A Banks, Jim Butcher, Rachel Caine, P N Elrod, Esther Friesner, Charlaine Harris, Sherrilyn Kenyon and Susan Krinard)
Moon Fever (2007) (with Caridad Piñeiro, Maggie Shayne and Susan Sizemore)
No Rest for the Witches (2007) (with MaryJanice Davidson, Cheyenne McCray and Christine Warren)