Strange Paradise
1. Strange Paradise (1969)
2. Island of Evil (1970)
3. Raxl, Voodoo Priestess (1970)

Valcour
1. Sisters of Valcour (1981)
2. For Love and Valcour (1983)
3. Crisis at Valcour (1985)

The Dark Rider (1961) (writing as Geraldine Thayer)
Island Nurse (1964)
World's Fair Nurse (1964)
No Tears Tomorrow (1964) (writing as Helaine Ross)
From Torment to Rapture (1964)
The Sins of Tonia (1964)
Cliffside Castle (1965)
Dance in Darkness (1965)
Darkhaven (1965)
The Lily Pond (1965)
Mostly By Moonlight (1965)
Shadow Glen (1965)
The Tower Room (1965)
The Unguarded (1965)
The Leland Legacy (1965)
Marriott Hall (1965)
The Mistress of Falcon Hill (1965)
Bride of Lenore (1966) (writing as Cynthia Kavanaugh)
Cruise Ship Nurse (1966)
Dark Villa (1966)
The Deception (1966) (writing as Cynthia Kavanaugh)
Knight in Red Armor (1966)
The Last of the Mansions (1966)
The Marble Leaf (1966)
     aka The Marble Angel
Mystic Manor (1966)
Nurse At Danger Mansion (1966)
Survivor of Darkness (1966)
The Templeton Memoirs (1966)
This Ancient Evil (1966)
The Eagle's Nest (1967)
House of False Faces (1967)
House of the Seven Courts (1967)
Mansion of Lost Memories (1967)
     aka House of Stolen Memories
The Sevier Secrets (1967)
Traitors Road (1967)
Screen Test For Laurel (1967)
Blue Devil Suite (1968)
Candle in the Sun (1968)
Duet (1968)
Lady of the Shadows (1968)
Affair in Marrakesh (1968)
The Carson Inheritance (1969)
Shadows of tomorrow (1969)
Voice on the Wind (1969)
Affair in Hong Kong (1969)
The Spanish Chapel (1969)
The Tormented (1969)
The Attic Rope (1970)
The Curse Of Mallory Hall (1970)
Emerald Hill (1970)
Journey Into Terror (1970)
The Man from Yesterday (1970)
The Raging Waters (1970)
A Web of Peril (1970)
Willow Weep (1970)
The Dark Stage (1970)
The Unearthly (1970)
The Apollo Fountain (1970)
The Bell (1971)
Conover's Folly (1971)
Diablo Manor (1971)
The Beaumont Tradition (1971)
Witch's Castle (1971)
The House of Many Doors (1971)
Castle Morvant (1972)
Dark Island (1972)
The Dueling Oakes (1972) (writing as Daniella Dorsett)
The House of Broken Dolls (1972)
The Maya Temple (1972)
The House on Circus Hill (1972)
Portrait of a Witch (1972)
The Lanier Riddle (1972)
The Larabee Heiress (1972)
The Caldwell Shadow (1973)
The Cauldwell Shadow (1973)
The Guardian of Willow House (1973)
Hills of Fire (1973)
Jade Green (1973)
The Possession of Tracy Corbin (1973)
The Silent Halls of Ashenden (1973)
The Stone House (1973)
The Duncan Dynasty (1973)
The Prisoner of Malville Hall (1973)
Image of a Ghost (1973)
Ghost Song (1974)
Island of Bitter Memories (1974)
Child Of Darkness (1974)
The Two Worlds of Peggy Scott (1974)
The Marble Hills (1975)
The Possessed (1975)
Shadow of a Man (1975)
Blackthorn (1975)
Night Shade (1975)
Illusion at Haven's Edge (1975)
The Unlamented (1975)
Dark Heritage (1976)
The Summer House (1976)
Terror of the Twin (1976)
Twilight At The Elms (1976)
Circle of Guilt (1976)
The Vineyard Chapel (1976)
Whistle in the Wind (1976)
Nightfall (1976)
A Mirror of Shadows (1977)
Poison Flower (1977)
The Wines of Cyprien (1977)
A Woman in Silk and Shadows (1977)
In the Shadows (1978)
The Lonely Place (1978)
Perrine (1978)
Hermitage Hill (1978)
Magic Ring (1978)
Juniper Hill (1978)
The Cormac Legend (1979)
Valley of Shadows (1979)
Yesterday's Evil (1979)
Veil of Treachery (1979)
Bridal Black (1980)
Nicola (1980)
The Purple and the Gold (1980)
Monte Carlo (1981)
Saratoga (1981)
House of Silence (1981)