Karen Harper

Morgan Sisters (as by Caryn Cameron)
   Liberty's Lady (1990)
   Freedom Flame (1990)

Elizabeth I
   1. The Poyson Garden (1999)
   2. The Tidal Poole (2000)
   3. The Twylight Tower (2001)
   4. The Queene's Cure (2002)
   5. The Thorne Maze (2003)
   6. The Queene's Christmas (2003)
   7. The Fyre Mirror (2005)
   8. The Fatal Fashione (2005)
   9. The Hooded Hawke (2007)

Maplecreek Amish
   1. Dark Road Home (2004)
   2. Dark Harvest (2004)
   3. Dark Angel (2005)

Amish Home Valley
   1. Fall from Pride (2011)
   2. Return to Grace (2012)
   3. Finding Mercy (2012)
   4. Upon A Winter's Night (2013)
   The Covered Bridge (2016)

Cold Creek
   1. Shattered Secrets (2014)
   2. Forbidden Ground (2014)
   3. Broken Bonds (2014)

South Shores
   1. Chasing Shadows (2016)
   2. Drowning Tides (2017)
   3. Falling Darkness (2017)
   4. Shallow Grave (2018)
   5. Silent Scream (2018)
   6. Dark Storm (2019)

Alaska Wild
   1. Deep in the Alaskan Woods (2020)
   2. Under the Alaskan Ice (2020)

   Island Ecstasy (1982)
   Passion's Reign (1983)
   Sweet Passion's Pain (1984)
   Rapture's Crown (1985)
   Midnight Mirage (1985)
   One Fervent Fire (1987)
   Dawn's Early Light (1988) (as by Caryn Cameron)
   Tame the Wind (1988)
   Silver Swords (1989) (as by Caryn Cameron)
   Eden's Gate (1989)
   The Firelands (1990)
   Braden's Brides (1990) (as by Caryn Cameron)
   Wild Lily (1991) (as by Caryn Cameron)
   Almost Forever (1991)
   King's Man (1991) (as by Caryn Cameron)
   Circle of Gold (1992)
   The Wings of Morning (1993)
   River of Sky (1994)
   Promises to Keep (1994)
   Black Orchid (1996)
   Empty Cradle (1998)
   The Baby Farm (1999)
   Down to the Bone (2000)
   Shaker Run (2001)
   The Stone Forest (2002)
   The Falls (2003)
   The Last Boleyn (2006)
   Hurricane (2006)
   The First Princess of Wales (2006)
   Inferno (2006)
   Below the Surface (2008)
   The Hiding Place (2008)
   Mistress Shakespeare (2009)
     aka Shakespeare's Mistress
   Deep Down (2009)
   The Queen's Governess (2009)
   Down River (2010)
   The Irish Princess (2010)
   Mistress of Mourning (2012)
   The Queen's Confidante (2012)
   The Royal Nanny (2016)
   The It Girls (2017)
   American Duchess (2019)
   The Queen's Secret (2020)

   A Country Christmas (1993) (with Emily Bradshaw (Emily Carmichael), Raine Cantrell, Patricia Rice and Jodi Thomas)
   Dark Crossings (2012) (with Patricia Davids and Marta Perry)
   Still Waters (2016) (with Heather Graham)
   Love in the Midnight Sun (2018) (with Heather Graham and Debbie Macomber)

   Blossoms (1995) (with Mary Balogh, Patricia Oliver, Margaret Evans Porter and Patricia Rice)

Harlequin Christmas Anthologies (as by Caryn Cameron) (with DeLoras Scott and Lynda Trent)
   Historical Christmas Stories, 1991 (omnibus) (1991)

More Than Words
   3. More Than Words, Volume 3 (2006) (with Tori Carrington, Catherine Mann, Kasey Michaels and Susan Wiggs)
   More Than Words: Stories Of Strength (omnibus) (2009) (with Susan Mallery and Carla Neggers)