- A. S. der Unsichtbare
- A.S. der Unsichtbare: Kriminalroman
- Aaron Rodd, Diviner
- Abduction at Griffith Observatory
- Abels Blut: Historischer Kriminalroman
- Absence of Mercy
- Absent On School Picture Day
- Absolución por asesinato
- Absolution By Murder
- Absolution par le meurtre
- Abtrünniges Blut
- Acceptable Loss
- Accomplished In Detection
- Accomplished In Murder
- Ace Carroway Around the World
- Aces Up
- Across the Line of Departure
- Act of Mercy
- Acts of Faith
- Adam
- Adel unter Verdacht
- Adel verpflichtet … zum Mord
- Adventures in America, 1883
- Adventures in Russia, 1881
- Adventures in The Wild West, 1878
- Adventures of Sherlock Holmes (Illustrated)
- After All These Years
- After America: The Disappearance 2
- After Clare
- After Fanny's Fall
- After Midnight
- After The War
- After You've Gone
- Against Odds
- Against the Brotherhood
- Agatha Webb
- Agnès Sorel
- Air Raid
- Albert de Menier - Exposition Universelle Die Gotteskinder von Paris
- Albert de Menier - Exposition Universelle Die Höllenpforte
- Alchemy: Ancient and Modern (Illustrated)
- Alchimie
- Alchimie einer Mordnacht
- Alex Cross's Trial
- Alexandria
- Alexandrian Saga (Books 1-3)
- Alias Grace
- Alive!
- All That Glitters
- All That Glitters...
- All That Remains
- All That Was
- All the Men as Mad as He
- All the Tea in China
- All Things Unholy
- Alla ricerca della Vita eterna
- Alla scoperta dell'eremo perduto
- Allein aus Gnade
- Allontata da me questo calice amaro
- Aloha, Jack: An Out of Time Novel
- Alone
- Along the Red Dirt Road
- Alpine Glow
- Alte Freunde - neue Feinde
- Always Elspeth
- Amadoro
- Always Elspeth
- Amadoro
- Amagansett
- Ambush on the Creeks
- Ambushed!
- American Red
- Ametropia
- Amid the Winter's Snow
- Among the Mad
- Amours bourgeoises, mort ancillaire
- Amy's Last Words
- An Accidental Corpse
- An Accidental Messiah
- An Act of Love
- An Act of Villainy
- An Angel Among Demons II
- An Anne Perry Christmas
- An Antartic Mystery
- An Appointed Time
- An Artful Corpse
- An Artless Demise
- An Awkward Way to Die
- An East End Murder
- An Echo of Murder
- An Elegant Solution
- An Element of Deceit: A Sherlock Holmes Case
- An Ensuing Evil and Others
- An Evil Eye
- An Exquisite Corpse
- An Extravagant Death
- An Impossible Impostor
- An Incomplete Revenge