- What Have You Done?
- What He Deserves
- What He Needed
- What Human Remains
- What I Did for Love
- What I Encountered Navigating the Astral Plane - edited
- What I Left Behind: Omnibus
- What I Never Lost
- What If ... The Conspiracy Is Real?
- What If the Queen Should Die?
- What If We Fall in Love?
- What If..?
- What If?
- What Is a Girl Like You ...
- What Is Growing Inside Maria
- What Is Growing Inside Maria? A Psychological Game of Horror You Will Lose
- What Is The Big Secret?
- What Is Time to a Pig?
- What It Was
- What It Was Like
- What James Did on Holiday
- What Jesus Did
- What Jonah Knew
- What July Knew
- What Katy Did Next
- What Killed Jonathon Harnish?
- What Kind Of Friend Are You: The Kind That Kills
- What Kind of Man...
- What Leads a Man to Murder
- What Lies Ahead
- What Lies Beneath the Graves
- What Lies Beneath The Lake
- What Lies Beyond The Wall: Part VI
- What Lies Within
- What Little Girls Are Made Of
- What Looks Like Crazy
- What Lurks Behind Real
- What Lurks Beneath
- What Men Want
- What Mommy Said
- What My Body Remembers
- What My Sister Knew
- What Nobody Knew: A Reincarnation Mystery
- What Not to Do on a Stakeout
- What Not to Wear to a Graveyard
- What Now My Love
- What Pretty Girls Are Made Of
- What Price Eden
- What Price Love?
- What Really Happened to Steve Nathan
- What Remains of Heaven
- What Remains of Me
- What Remains of Teddy Redburn
- What Remains: A Short Story Trilogy
- What Return Shall I Make
- What Rose Forgot
- What Sarah Saw
- What Seems True
- What She Doesn’t Know
- What She Fears
- What She Found: A Psychological Thriller
- What She Knows
- What She Left (Enhanced Edition)
- What She Lost
- What She Never Told Me
- What She Saw Last Night
- What She Will Become
- What So Proudly We Hailed
- What Strange Creatures
- What Strange Paradise
- What Summer Blinds May See
- What the Bishop Saw
- What the Cat Brought Back
- What the Cat Dragged In
- What the Cat Saw
- What The Cowboy Prescribes...
- What the Dead Know
- What the Dead Leave Behind
- What the Dead Know
- What the Dead Leave Behind
- What the Devil Knows
- What the Dragonfly Saw: Dragonfly Deeds Volume I of the Dragonfly Series
- What the Dragonfly Saw: Dragonfly Dreams—Volume II of the Dragonfly Series
- What the Drone Saw
- What The Fangs
- What the Fly Saw
- What the Hatmaker Heard
- What the Heart Remembers
- What the Hell Did I Just Read
- WHAT THE LADY WANTS
- What the Mirror Doesn't See
- What the Moon Brings
- What the Night Knows
- What the Night Knows (with bonus novella Darkness Under the Sun)
- What the Rain Washes Away
- What the River Knows
- What the Shadow Knew: A Deacon Bishop Mystery
- What The Town Knew
- What the Widow Knew
- What They Knew
- What Timmy Did (Mystery Classic)
- What to Do When Someone Dies
- What to Do When Someone Dies
- What to Expect When Your Demon Slayer is Expecting
- What Was It?
- What We Do Is Secret
- What We Kill
- What We Leave Undone
- What We May Be
- What We've Lost Is Nothing
- What Will Burn
- What Will Survive
- What Would Tom Do?
- What You Ask For
- What You Break
- What You Can't See