Urban Cowboys
1. The Trailblazer (1995)
2. The Drifter (1995)
3. The Lawman (1995)

Three Cowboys and a Baby
1. The Colorado Kid (2000)
2. Two in the Saddle (2000)
3. Boone's Bounty (2000)
4. That's My Baby! (2000)

Garfield
1. Mystery Lover (2001) (in Midnight Fantasies)
2. Notorious (2001)

Drive Me
1. Drive Me Wild (2003)
2. Drive Me Crazy (2006) (in A Fare to Remember)

Nerd
1. Nerd in Shining Armor (2003)
2. The Nerd Who Loved Me (2004)
3. Nerd Gone Wild (2005)
4. Gone With the Nerd (2005)
5. Talk Nerdy to Me (2006)
6. Nerds Like It Hot (2006)
7. My Nerdy Valentine (2007)

Bachelor Pact (with Kathleen O'Reilly)
4. The Longest Night (2004)

Hex
1. Over Hexed (2007)
2. Wild & Hexy (2008)
3. Casual Hex (2009)

Sons of Chance
1. Wanted! (2010)
2. Ambushed! (2010)
3. Claimed! (2010)
4. Cowboys Like Us (2011)
5. Should've Been a Cowboy (2011)
6. Cowboy Up (2011)

Babes on Brooms
1. Blonde with a Wand (2010)
2. Chick with a Charm (2010)

Dark Ones (with Connie Brockway, Katie MacAlister)
Cupid Cats (omnibus) (2010)

Wild About You
1. A Werewolf in Manhattan (2011)
2. Werewolf in the North Woods (2011)
3. Werewolf in Seattle (2012)
4. Werewolf in Denver (2012)
Werewolf in Greenwich Village (2011)

Mingled Hearts (1984)
Promise Me Sunshine (1984)
An Impractical Passion (1985)
When Angels Dance (1985)
Butterflies in the Sun (1986)
The Fix It Man (1986)
As Time Goes by (1986)
Cupid's Caper (1987)
Golden Girl (1987)
The Flip Side (1988)
Impulse (1988)
The Nesting Instinct (1988) (writing as Corey Keaton)
Sparks (1988)
Be Mine, Valentine (1989)
Full Coverage (1989)
'Tis the Season (1989)
Connections (1989)
Forever Mine Valentine (1990)
Your Place or Mine (1991)
Critical Moves (1992)
Anything Goes (1992)
Ask Dr. Kate (1992)
Only in the Moonlight (1993)
Fools Rush in (1993)
The Bounty Hunter (1994)
Under His Spell (1994)
Loverboy (1994)
Wedding Song (1994)
Adam Then and Now (1995)
Holding Out for a Hero (1996)
Stuck With You (1996)
Going Overboard (1997)
The Heart Breaker (1997)
Mr. Valentine (1997)
Manhunting in Montana (1998)
Operation Gigolo (1998)
Pure Temptation (1999)
Once Upon a Mattress (1999)
The Nights Before Christmas (2001)
Acting on Impulse (2002)
After Hours (2003)
Old Enough to Know Better (2004)
Killer Cowboy Charm (2004)
Talking about Sex... (2005)
Long Road Home (2012)
Lead Me Home (2012)

My Valentine (1992) (with Kristine Rolofson, JoAnn Ross and Gina Wilkins)
A Match for Mom (1997) (with Anne Mather and Linda Randall Wisdom)
The Cupid Connection (1998) (with Anne Stuart, Cathy Gillen Thacker)
Escapade (1998) (with Margot Early, Lynne Graham and Rebecca York)
Bringing Up Baby New Year / Frisky Business (1999) (with Tracy South)
My Secret Admirer (1999) (with Marisa Carroll, Anne Stuart)
With a Stetson and a Smile / Bridesmaid's Bet (1999) (with Christine Ridgeway)
A Man for Mum! (1999) (with Penny Jordan, Leigh Michaels)
Perfect Summer (1999) (with Stephanie Bond, Janice Kaiser, JoAnn Ross)
Mail-Order Grooms (2000) (with Day Leclaire)
Kissing Frosty / Santa in a Stetson (2000) (with Anne Stuart)
Taming the Lone Wolf / Single in the Saddle (2001) (with Joan Johnston)
Urban Cowboys (2001)
In Hot Pursuit (2001) (with Roz Denny Fox, Sherry Lewis)
Heat of the Night (2002) (with Lori Foster and Gina Wilkins)
Bedazzled (2002) (with Rita Clay Estrada, Jayne Ann Krentz)
The Silent Type (2002)
Behind the Red Doors (2003) (with Stephanie Bond, Leslie Kelly)
Invitations to Seduction (2003) (with Janelle Denison, Carly Phillips)
Reading Between the Lines (2004) (with Leslie Kelly)
Fool for Love (2004) (with Judith Arnold, Stephanie Bond)
Old Enough to Know Better / Sweet Talkin' Guy (2004) (with Colleen Collins)
Killer Cowboy Charm / Truth About Harry (2004) (with Tracy Kelleher)
Getting Real (2005) (with Jennifer LaBrecque, Julie Elizabeth Leto)
Summer Loving (2005) (with Rhonda Nelson)
Killer Cowboy Charm / Sparking His Interest (2005) (with Wendy Etherington)
Love and War / Hero in Disguise (2005) (with Peg Sutherland)
Undressed (2005) (with Suzanne Forster, Alison Kent)
Double Exposure / Playing Games / The Gift of Joy (2005) (with Dianne Drake, Joan Hohl)
A Fare to Remember (2006) (with Kate Hoffmann, Julie Elizabeth Leto)
Winter Heat (2009) (with Anna DeStefano, Jade Lee)
Better Naughty Than Nice (2009) (with Rhonda Nelson, Jill Shalvis)
Two in the Saddle / Boone's Bounty (2010)
One-Click Buy: August 2010 Harlequin Blaze (2010) (with Lisa Renee Jones, Rhonda Nelson, Joanne Rock, Jill Shalvis, Cara Summers)
One-Click Buy: July 2010 (2010) (with Karen Foley, Rhonda Nelson, Kimberly Raye, Jill Shalvis, Hope Tarr)
Holiday Hideout (2011) (with Julie Kenner, Jill Shalvis)
Merry Christmas, Baby (2011) (with Jennifer LaBrecque, Rhonda Nelson)

Mail Order Men
7. Single in the Saddle (1998)
12. Every Woman's Fantasy (2001)

Bachelor Auction
27. Single, Sexy... and Sold! (1999)
Bachelor Father (1999)

Wink & a Kiss (with Stephanie Bond, Kimberly Raye)
8. Midnight Fantasies: Mystery Lover / After Hours / Show and Tell (omnibus) (2000)

Maitland Maternity
11. Her Best Friend's Baby (2001)

Cooper's Corner
2. Double Exposure (2002)

Crystal Creek (with Bethany Campbell, Cathy Gillen Thacker)
Return to Crystal Creek (omnibus) (2002)

Nascar (with Dorien Kelly and Nancy Warren)
Racing Hearts (omnibus) (2010)