- I Am Half-Sick of Shadows
- I Can't Make You Love Me, but I Can Make You Leave
- I cinque del salotto (Un giallo intimo e leggero di Lacey Doyle—Libro 3)
- I doni delle streghe
- I Dreamed I Married Perry Mason
- I Have a Secret
- I Saw Mommy Killing Santa Claus
- I Shot You Babe
- I Spy a Courtyard Casanova
- I Spy a Psychic Eye
- I Spy with My Psychic Eye Someone Dead (Piper Ashwell Psychic P.I. Book 8)
- I, Hunter
- Ibeles Feuer
- Ice Breakers
- Ice Cream Corpse
- Ice Pick in the Ivy
- Ice Queen
- Ice Star
- Iced
- Iced Chiffon
- Iced in Paradise
- Iced to Death
- Ich koch dich tot & Mach mir den Garten, Liebling!
- Icing Allison
- Icing on the Casket
- If Books Could Kill
- If Bread Could Rise to the Occasion
- If Catfish Had Nine Lives
- If date equals...
- If Fried Chicken Could Fly
- If Hooks Could Kill
- If Llamas Could Talk . . .
- If Not For You
- If the Coffin Fits
- If the Haunting Fits, Wear It
- If Wishes Were Horses...
- If You've Got It, Haunt It
- Ihr Wille geschehe
- Ill Met By Moonlight
- Ill Met By Murder
- Ill-Gotten Panes
- Ill-Timed Entanglements
- Illegally Iced
- Illusions of Power
- Im Blut
- Im Dorf der Witwen
- Im Garten meiner Liebe
- Im Haus der Witwe (Kriminalroman)
- Im Namen des ...
- Im Netz der NSA
- Im Schatten der Pineta
- Im Schatten des Mont Bisanne
- Im schwarzen Wasser
- Im Tal des Fuchses
- Im Tal des Fuchses
- Im trüben Wasser: Ein Neusiedler See Krimi
- Im Tweedkostüm auf Mörderjagd - Ethelred Tressider ermittelt
- Im Vatikan ist die Hölle los
- Im Wald
- Immer Montags
- Immer Ärger mit der Famiglia
- Importance of Being Urnest
- In a Dry Season
- In a Gilded Cage
- In a Midnight Wood
- In a Witch's Wardrobe
- In Charm's Way
- In Cold Chamomile
- In Dublin's Fair City
- In dunkler Tiefe sollst du ruhn
- In eigener Sache: Detektei Lessing Kriminalserie, Band 38.
- In Ewigkeit. Amen
- In Flagrante Erecto
- In het rood
- In Hot Water
- In Like Flynn
- In Schönheit sterben
- In Search of a Happy Ending
- In Search of the Rose Notes
- In Sheep's Clothing
- In Strangers' Houses
- In the Bag
- In The Company Of Cheerful Ladies
- In the Company of Witches
- In the Dark
- In the Dog House
- In the Drink
- In the Line of Ire (Lexi Graves Mysteries, 13)
- In the Nib of Time
- In the Onyx Lobby (Annotated)
- In The Shadow
- In the Shadows of a Lie
- In the Teeth of Adversity
- In Vino Veritas
- In-Laws, Outlaws, and Uninvited Guests
- Incantations and Iced Coffee
- Incastrato da un falso (Un giallo intimo e leggero di Lacey Doyle–Libro 8)
- Incendiary
- Indecent Exposure
- Indelible
- Independence Day in Cherry Hills
- Independence Slay
- Independent Bones
- Inferno i snö
- Influenced to Death
- Infortune (et Gouda) (Un voyage européen – Livre 4)
- Inherit the Shoes
- Inherit the Wool
- Inherit the Word
- Inimă atât de albă
- Initials Only
- Ink and Shadows
- Inn Over Her Hex
- Innkeeping with Murder
- Innocent Murderer
- Inquiring Minds and Death
- Ins Gras gebissen
- Ins Watt gebissen
- Insel der Todeslinien
- Inselfeuer
- Inselkoller: Kriminalroman
- Inselkrimis Ostfriesland II
- Inselmord & Backfischbrötchen
- Inselzirkus
- Insomnia
- Inspector Stone Mysteries Volume 1 (Books 1-3)
- Intermezzo: Family Matters
- Intermezzo: Household Matters
- Intermezzo: Spirit Matters
- Interpretation
- Intertwined Fate
- Interview with a Dead Editor
- Into the Dark
- Into the Dark Forest
- Into The Fire
- Into the Frying Pan
- Into the Lion's Den: A Religious Amateur Detective Mystery
- Into the Mist
- Into the Sweet Hereafter
- Into The Unknown #3
- Into Thin Eire
- Intrigues à la clinique AuLac
- Introducing Hamish Macbeth: Mysteries #1-3
- Invecchiato per il Caos (Un Giallo Intimo tra i Vigneti della Toscana—Libro 3)
- Invecchiato per la Malizia (Un Giallo Intimo tra i Vigneti della Toscana—Libro 7)
- Invecchiato per la Morte (Un Giallo Intimo tra i Vigneti della Toscana—Libro 2)
- Invecchiato per l’acredine (Un Giallo Intimo tra i Vigneti della Toscana—Libro 6)
- Invecchiato per un Omicidio (Un Giallo Intimo tra i Vigneti della Toscana—Libro 1)
- Invitation Only Murder
- Invitation to Murder
- Irish Alibi
- Irish Chain
- Irish Coffee
- Irish Gilt
- Irish Parade Murder
- Irish Stewed
- Iron Sinking
- Irrbloss
- Is Murder by Candlestick Still a Thing?
- Isabel Puddles Investigates