- Immer Montags
- Immersione
- Imminent Peril
- Imminently Dead
- Immortal Wounds: A Doctor Nora Kelly Mystery
- Imperiled
- Imperious
- Imposter for Hire
- IMPRIMATUR - Die Toten von Rom
- Improper Influence
- Impulse to Murder
- In a Bind
- In a Cottage in a Wood
- In a Dark Season
- In a Midnight Wood
- In Absentia
- In Between Episode 2
- In Cassie's Corner
- In cerca di vendetta (Un Mistero di Riley Paige — Libro 10)
- In Close Quarters
- In Cold Blood
- In Cold Chamomile
- In Dark Company
- In Death's Shadow
- In Deep Voodoo
- In des Waldes düstren Gründen
- In Dust and Ashes
- In Each Other's Embrace: An Eve Snow Psychic P.I Story, the Prequel
- In eisigem Wasser
- In ewiger Nacht
- In God's Name
- In Harm’s Way
- In het rood
- In High Cotton
- In Hot Water
- In Love and Danger
- In Memoria
- In Over Her Head Chloe Babineaux Private Investigator
- In Plain Sight
- In Pursuit of Justice
- In Retrospect
- In Rhino We Trust
- In Safe Hands
- In Schönheit sterben
- In Search of a Witch's Soul
- In Search of Valor
- In Sheep's Clothing
- In stürmischer Nacht
- In the Bag
- In the Bear Cave
- In the Bleak Midwinter
- In The Bleak Midwinter: A Special Agent Constance Mandalay Novel
- In the Cards
- In the Clinch: A Kira Brightwell Novel
- In the Company of Fools
- In the Dark
- In The Day, Darkness: A Novel
- In the Dead of Summer
- In the Enemy's Shadow
- In the Guise of Mercy
- In the Hush of the Night
- In the Land of Milk and Honey
- In The Market For Murder
- In The Midnight Howl
- In the Name of the Father
- In the Nib of Time
- In the Presence of My Enemies (An Emily O'Brien novel #5)
- In the Red
- In The Shadow
- In the Shadow of the Enemy
- In the Shadow of Vesuvius
- In the Shadows
- In the Wash
- In the Wings
- In the Wash
- In the Wings
- In Transit
- In Want of a Knife
- In Winter's Grip
- In-Laws, Outlaws, and Uninvited Guests
- Inadvertent Disclosure
- Incantations and Iced Coffee
- Incastrato da un falso (Un giallo intimo e leggero di Lacey Doyle–Libro 8)
- Incel
- Incendiary
- Incenerita
- Incognita (Bookburners Season 2 Episode 6)
- Inconspicuous
- Increased Mortality
- Incroci obbligati
- Indefensible
- Indemnity Only
- Independence Day in Cherry Hills
- Independence Slay
- India Black
- India Black and the Rajah's Ruby
- India Black and the Shadows of Anarchy
- India Black in the City of Light (Novella)
- Indigo
- Indigo Dying
- Indispensable Party
- Indulgence in Death
- Inescapable Fate
- Inevitable Discovery
- Infallible
- Inferno - ein neuer Fall für Robert Langdon
- Inferno i snö
- Infinite Doublecross
- Influenced to Death
- Infortune (et Gouda) (Un voyage européen – Livre 4)