- I Am Half-Sick of Shadows
- I bastardi vanno all'inferno (Nero Rizzoli)
- I Beati Paoli
- I Borgia
- I Can't Begin to Tell You
- I delitti dei nove cieli
- I delitti del mosaico
- I delitti dell'oro cinese
- I delitti della luce
- I delitti della Medusa
- I delitti della Rue Morgue. Il mistero di Marie Rogêt
- I demoni di Berlino
- I Figli Del Sole
- I figli dell'oblio
- I guardiani della laguna
- I leoni d'Europa
- I misteri delle soffitte
- I misteri di Chalk Hill
- I Piombi Neri
- I Saw Him Die
- I senza cuore
- I Shot the Buddha
- I signori delle ombre
- Icy Control
- Ides of June, The
- If I Die Again
- If the Dead Rise Not
- If These Walls Could Only Talk
- If Trees Could Testify... A novel based on the true story of Madison County's infamous Gahagan murde...
- Ihr Los ist Finsternis
- Ill Wind
- Illuminati Halloween
- Illusion
- Ils ont tué Ravaillac
- Im Auftrag des Shōguns
- Im Bann der Fledermausinsel
- Im Dunkel Berlins
- Im gleißenden Licht der Sonne
- Im Haus der Witwe
- Im Herzen der Koralleninsel
- Im Netz der Lügen
- Im Rausch
- Im Schatten der Königin
- Im Schatten des Klosters
- Im Schatten von San Marco
- Imagination Theatre's Sherlock Holmes
- Immagino
- Immortel
- Impending Love and Madness
- Imperio perdido (Las aventuras de Fargo 2)
- Imperium (Trilogía de Cicerón 1)
- Imprimatur
- IMPRIMATUR - Die Toten von Rom
- Improvements
- Impudique point ne seras
- In a Cellar
- In a Cellar and other Stories
- In A Safe Town
- In a Time of Smallpox Death Arrives
- In All His Glory
- In bratele unui prinț
- In caduta libera come in un sogno
- In cerca di Atlantide
- In Deinem schönen Leibe
- In den Armen des Spions
- In den Tod geschickt
- In Friendship's Guise
- In from the Cold
- In het teken van de ram
- In Milady's Chamber
- In Odd We Trust (Odd Thomas Graphic Novel)
- In Pursuit of the Dead
- In Queer Street
- In Shadowland
- In Situ
- In The Closed Room
- In the Company of Fools
- In the Den of the English Lion
- In The Dying Days
- In the Enemy's Shadow
- In the Fog
- In the House of Dark Music
- In The House of Secrets and Lies
- In The Kingdom Of Mists
- In The Lion's Sign
- In the Shadow of Croft Towers
- In the Shadow of Lies
- In the Shadow of the Enemy
- In the Shadow of Versailles
- In the Shadow of Vesuvius
- In This Our World, Suffrage Songs and Verses - A Collection of Poems
- In Two Places
- In Unhallowed Rest
- In Walked a Lady
- Incident on the High Line
- Incursión a lo desconocido
- Indiana
- Infernal Devices
- Inferno
- Inferno i snö
- Infiltrator
- Infinite Loop
- Inimă îndărătnică
- Innocent breuvage
- Ins Herz
- Inspector Bucket's Job (Fantasy and Horror Classics)
- Inspector of the Dead
- Inspector Swanson und der Fall Jack the Ripper
- Inspector Swanson und die Frau mit dem zweiten Gesicht
- Inspector Swanson und die Mathematik des Mordens
- Instytut młodych naukowców
- INSURRECTIO
- InterFEARence: A Novel About Life, Love and Stalin.
- Interregnum