- In het spoor van de Hopduvel
- In het teken van de ram
- In het zicht van de moordenaar: Thriller
- In High Cotton
- In High Places
- In His Blood
- In His Collar
- In His Control
- In His Hands
- In His Keeping
- In His Name
- In His Protective Custody
- In His Sights
- In His Silks
- In His Wife's Name
- In Honour Bound
- In Hot Water
- IN IDEM
- In Jail For My Own Truth
- In jener Nacht
- In Justice Found
- In kindlicher Liebe
- In letzter Minute
- In Like Flynn
- In Lincoln's Shadow
- In Linea con il Pericolo
- In Love
- In Love and Danger
- In Love and Death
- In Love With An Assassin 1: An Innocence Taken
- In Love With An Assassin 2: A Good Girl Gone Bad
- In Love with My Enemy
- In Love With The Boss
- In Luck at Last
- In Lvov
- In Magic's Shadow
- In Malice, Quite Close
- In Memoria
- In mijn dromen
- In Milady's Chamber
- In Motion
- In Murder's Wake
- In My Dark Dreams
- In My Destiny
- In My Dreams I Hold a Knife
- In My Mind
- In My Power: A Murder Mystery
- In München wartet der Tod
- In the Name of Silence
- In No Way Guilty
- In nome del popolo italiano
- In Nomeni Patri (Cult of the Butterfly 2)
- In Nomine Mali
- In Nomine Patris
- In nomine Patris
- In Nomine Patris
- In Obscura
- In Odd We Trust (Odd Thomas Graphic Novel)
- In Other Words
- In Other Words...Murder: Holmes & Moriarity 4
- In Our Hands The Stars
- In Our Name
- In Over Her Head
- In Over Her Head Chloe Babineaux Private Investigator
- In over Your Head
- In Over Your Head
- In Pale Battalions
- In Peace
- In perfetto orario
- In Peril's Way: A Detective Dylan Greene Mystery
- In Pieces
- In Place of Death
- In Praise of the Bees
- In presenza del nemico
- In prima persona
- In Prior's Wood
- In Pursuit Of A Princess
- In Pursuit Of A Princess
- In Pursuit of Arete
- In Pursuit of Justice
- In Pursuit Of Platinum
- In Pursuit of the Dead
- In Pursuit of the Enemy
- In Pursuit of the Proper Sinner
- In Pursuit of Trust
- In Queer Street
- In Rio's Shadows
- In Royale Peril: A Marnie and Zane Adventure
- In Sachen Signora Brunetti
- In Safe Arms (Grace & Poole, #2)
- In Safe Hands (Grace & Poole, #1)
- In Safe Keeping (Grace & Poole, #3)
- In Search of a Happy Ending
- In Search of a Witch's Soul
- In Search of Dr Watson
- In Search of Evil
- In Search of Himself
- In Search of Ina Byers
- In Search of Klingsor
- In Search of Mercy
- In Search of Shipki La
- In Search of the Castaways
- In Search of the Dragon Blanco
- In Search of the Rose Notes
- In Search of the Unknown