- I Am Endless
- I Am Ghost
- I Am Kimberly Cole
- I am Morte
- I Brake for Biker Witches
- I Cry Gray Mountains On The Moon
- I didn't die, I woke up
- I doni delle streghe
- I fantasmi di Cosmo Topper
- I pirati fantasma
- I racconti del mistero
- I Remember You
- I Remember You: A Ruby's Place Novel
- I See You So Close
- I See You...
- I'll Be There For The Replay
- Ian's Gang: Homecoming
- Ian's Gang: The Flying Dutchman
- Icefalcon’s Quest
- If I Die
- If You're Haunted Flaunt It
- If You've Got It, Haunt It
- Ifrit
- Ignaz Denner
- Illusions of Power
- Imaginaerum - racconti oscuri
- Imago Mortis
- Imago Mortis
- Imajica
- Immortelle
- In Between
- In Case I Go
- In Cassie's Corner
- In Charm's Way
- In For A Pound
- In fuga
- In fuga da Houdini
- In Ghostly Japan
- In Ghostly Japan (Collected Horror Tales)
- In Good Company
- In High Spirits
- In Memoriam
- In Remembrance
- In Search of Flesh
- In Stone
- In the Birth House of Jeremy Cove: Death
- In The Blood
- In the Court of the Yellow King
- In the Dark
- In the End
- In The Event of Death
- In the Land of Dreams
- In the Land of the Vultures
- In the Light of the Full Moon
- In the Midnight Hour
- In the Night In the Dark
- In the Pines
- In the Rain with the Dead
- In the Shadow of Porter's Hollow
- In the Shadow of the Spire
- In the Shadow of the Styx
- In the Still of the Night
- In the Tall Grasses
- In the Valley of the Statues: And Other Stories
- In the Wind
- Incarnate, a Paranormal Romance (Spiritus Series Book #3)
- Incorruptible
- Indaco profondo
- Indispensable Friendship & Death Collide
- Inexplicables mais vraies
- Infectados El principio
- Infected and Other Short Stories
- Infected Rage
- Infectious
- Infernaliana
- Infestation
- Influx
- Inhabited
- Inheriting Evergreen
- Inhospitable
- Inimigos
- Inner Conflict
- Inqenqincenc - les Inquietantes Enquêtes d Incoming Encounters S.01 - Ep.05
- InqEnqIncEnc - les Inquiétantes Enquêtes d'Incoming Encounters S.01 - Ep.07
- InqEnqIncEnc - Les Inquiétantes Enquêtes d’Incoming Encounters - S.01 – ép.08
- InqEnqIncEnc – Les Inquiétantes Enquêtes d’Incoming Encounters - S.01 – ép.01
- InqEnqIncEnc – Les Inquiétantes Enquêtes d’Incoming Encounters - S.01 – ép.02
- InqEnqIncEnc – Les Inquiétantes Enquêtes d’Incoming Encounters - S.01 – ép.03
- InqEnqIncEnc – Les Inquiétantes Enquêtes d’Incoming Encounters - S.01 – ép.04
- InqEnqIncEnc – Les Inquiétantes Enquêtes d’Incoming Encounters - S.01 – ép.06
- Insania
- Inside Melting House
- Insomnia
- Inspector Specter
- Instinto de superviviente
- Insurgence
- International Short Stories (French Stories)
- Interpretation
- Intervista col vampiro
- Into Bones like Oil
- Into Gray Wood
- Into the Garden of Gethsemane, Georgia
- Investigating Bellvue House
- Invisible Dead Person and Other Weird Tales
- Invisible Things and other Weird Stories
- Inès de Las Sierras
- IR-REEL
- Ireland's Haunted Women
- Iris & Ivy, a Moretown Bay novel
- Irish Mist
- Irma
- Ironsides, The Haunted Robot
- Irrlicht 1 – Mystikroman
- Irrlicht 11 – Mystikroman
- Irrlicht 12 – Mystikroman
- Irrlicht 13 – Mystikroman
- Irrlicht 14 – Mystikroman
- Irrlicht 15 – Mystikroman
- Irrlicht 16 – Mystikroman
- Irrlicht 18 – Mystikroman
- Irrlicht 2 – Mystikroman
- Irrlicht 20 – Mystikroman
- Irrlicht 21 – Mystikroman