| Title | Titolo | Year | Series |
| Murder at Grand Bay | 1955 | ||
| The Girl Who Wasn't There | 1957 | ||
| The Ghosts of Harrel | 1960 | ||
| Murder Is So Easy | 1961 | ||
| The Suspected Four | 1962 | ||
| Nurse Kay's Conquest | 1966 | ||
| Once a Nurse | 1966 | ||
| Nurse At Mystery Villa | 1967 | ||
| Return to Darkness | 1969 | ||
| The House At Fern Canyon | 1970 | ||
| Shadow of a Past Love | 1970 | ||
| Shroud of Fog | 1970 | ||
| The Waiting Darkness | 1970 | ||
| Devil Boy | 1971 | ||
| Invitation to Evil | 1971 | ||
| King's Pawn | 1971 | ||
| The Terror Trap | 1971 | ||
| Dangerous Legacy | 1972 | ||
| The Face of Danger | 1972 | ||
| Inherit the Darkness | 1972 | ||
| Sing a Dark Song | 1972 | ||
| White Jade | 1975 | ||
| Secret Lives of the Nurses | 1975 | ||
| The View from the Cherry Tree | 1975 | ||
| Expendable | 1976 | ||
| The Jaubert Ring | 1976 | ||
| Cape of Black Sands | 1977 | ||
| Don't Hurt Laurie | 1977 | ||
| House of Impostors | 1977 | ||
| Dark Dowry | 1978 | Black Pearl | |
| The Cade Curse | 1978 | Black Pearl | |
| The Stuart Stain | 1978 | Black Pearl | |
| The Radkin Revenge | 1978 | Black Pearl | |
| Act of Fear | 1978 | ||
| The Minden Curse | 1978 | ||
| Key Witness | 1978 | ||
| The Devil's Double | 1979 | Black Pearl | |
| The Hellfire Heritage | 1979 | Black Pearl | |
| The Macomber Menace | 1979 | Black Pearl | |
| Didn't Anybody Know My Wife? | 1979 | ||
| The Gresham Ghost | 1980 | Black Pearl | |
| Destiny's Women | 1980 | ||
| The Girl with the Silver Eyes | 1980 | ||
| Touch of Frost | 1981 | ||
| Long Time to Hate | 1982 | ||
| Face at the Window | 1983 | ||
| The Pet-Sitting Peril | 1983 | ||
| House of Fear | 1983 | ||
| No Monsters in the Closet | 1983 | ||
| Days of Valor | 1983 | ||
| Caroline | 1984 | Sunfire | |
| Elizabeth | 1984 | Sunfire | |
| The Gallant Spirit | 1984 | ||
| Weekly Reader Books Presents Eddie and the Fairy Godpuppy | 1984 | ||
| The Sniper | 1984 | ||
| Keating's Landing | 1984 | ||
| Victoria | 1985 | Sunfire | |
| The Annalise Experiment | 1985 | ||
| Baby-Sitting Is a Dangerous Job | 1985 | ||
| My Rebel My Love | 1986 | ||
| Forever Love | 1986 | ||
| Share a Dream | 1986 | ||
| Stokes Carson: Twentieth-century Trading On the Navajo Reservation | 1987 | ||
| Sugar Isn't Everything: A Support Book, in Fiction Form, for the Young Diabetic | 1987 | ||
| The Magic Book | 1988 | ||
| Megan's Island | 1988 | ||
| Madawaska | La valle del sole | 1988 | |
| What Could Go Wrong? | 1989 | ||
| Nightmare | 1989 | ||
| More Minden Curses | 1990 | ||
| Dark Secrets | 1991 | ||
| Scared Stiff | 1991 | ||
| Eddie and the Fairy Godpuppy | 1992 | ||
| Jo and the Bandit | 1992 | ||
| What Are We Going to Do About David? | 1993 | ||
| To Grandmother's House We Go | 1994 | ||
| Caught! | 1994 | ||
| To Share a Dream | 1994 | ||
| The Absolutely True Story: How I Visited Yellowstone Park with the Terrible Rupes | 1994 | ||
| Twisted Summer | 1996 | ||
| Secrets at Hidden Valley | 1997 | ||
| The Kidnappers | 1998 | ||
| Pawns | 1998 | ||
| Hostage | 2000 | ||
| Buddy Is a Stupid Name for a Girl | 2001 | ||
| Undercurrents | 2002 | ||
| Rebel | 2003 | ||
| Blood on His Hands | 2004 | ||
| The One Left Behind | 2006 | ||
| La stirpe di Mallows | ???? |