The Kidnapping of Christina Lattimore (1979)
The Séance (1980)
The Spectre (1982)
A Deadly Game of Magic (1983)
The Ghosts of Now (1984)
The Stalker (1985)
The Other Side of Dark (1986)
The Dark and Deadly Pool (1987)
A Family Apart (1987)
Caught in the Act (1988)
In the Face of Danger (1988)
Secret, Silent Screams (1988)
The Island of Dangerous Dreams (1989)
A Place to Belong (1989)
Star Baby (1989)
Whispers from the Dead (1989)
Encore (1990)
Overnight Sensation (1990)
Candidate for Murder (1991)
High Trail to Danger (1991)
A Deadly Promise (1992)
Land of Hope (1992)
The Weekend Was Murder! (1992)
Land of Promise (1993)
The Name of the Game Was Murder (1993)
Land of Dreams (1994)
Shadowmaker (1994)
A Dangerous Promise (1994)
Keeping Secrets (1995)
Spirit Seeker (1995)
Don't Scream (1996)
Search for the Shadowman (1996)
Murdered, My Sweet (1997)
A Circle of Love (1997)
The Haunting (1998)
Who Are You? (1999)
Nobody's There (2000)
Playing for Keeps (2001)
The Trap (2002)
Nightmare (2003)
Laugh Till You Cry (2004)
The Haunted House on Honeycutt Street (1991)
Honeycutt Street Celebrities (1991)
Mystery Box (1991)
Watch Out for Dinosaurs (1991)
That's the Spirit, Claude (1992)
Will you Give Me a Dream? (1994)
When I Am Eight (1994)
The Statue That Walks at Night (1995)
The Legend of the Lost Mine (1995)
Backstage with a Ghost (1995)
Check in to Danger (1995)
The House Has Eyes (1996)
No Time for Danger (1996)
Beware of the Pirate Ghost (1996)
Catch a Crooked Clown (1996)
Fear Stalks Grizzly Hill (1996)
Sabotage on the Set (1996)
Search for the Shadowman (1996)
The Internet Escapade (1997)
Bait for a Burglar (1997)
Lucy's Wish (1998)
Will's Choice (1998)
Aggie's Home (1998)
David's Search (1998)
Ann's Story, 1747 (2000)
Caesar's Story, 1759 (2000)
Nancy's Story, 1765 (2000)
Gus and Gertie and the Missing Pearl (2000)
Maria's Story, 1773 (2001)
Gus and Gertie and the Lucky Charms (2001)
John's Story: 1775 (2001)
Writing Mysteries for Young People (1977)
Oil and Gas: From Fossils to Fuels (1977)
Volcanoes: Nature's Fireworks (1978)
The Grandmother's Book (1979)
Glaciers: Nature's Frozen Rivers (1980)
Earthquakes: Nature in Motion (1981)
Land Under the Sea (1985)
The Making of a Writer (2002)
There's a Tomb Waiting for You (1992)
Hannah's Promise (1994)
The Disappearance of Gavin McCann (1996)
The Dark Beast of Death (1997)
No Matter What (1997)
Try to Survive (1998)
Ghost Town: Seven Ghostly Stories (2000)
A Link Between Young People of the Past and Present: Providing the Common Ground (1989)
Writing for the Reluctant Reader (1993)
When Is a Series Not a Series? Ask the Author (1996)
Forward: We Have the Power (1996)
Creating Believable Teen-Age Sleuths (2001)
Dear Teachers (2001)
Building Block Award for Community Service for Children (2001)
St. Katherine Drexel Award, Catholic Library Association (2002)
Kerlan Award for Excellence in Children's Literature (2002)
Author of the Year, The Writers' Harvest, Houston Barnes & Noble (2002)
