- Sechs Romane um Liebe und Geheimnis: Romantic Thriller Sommer
- Sechs Schlüssel ins Jenseits
- Sechs Tage im Herbst
- Sechs Wochen im Herbst
- Sechs, Sieben, Cache!
- Sechseläuten
- Sechsmal tödlich
- Sechzehn Pferde
- Secluded
- Secluded Shadows
- Secluded with the Cowboy
- Second Bite
- Second Burial
- Second Chair, A Stan Turner Mystery, Vol.3
- Second Chance (Chances Are #2)
- Second Chance Cowboy
- Second Chance Demon
- Second Chance Magic
- Second Chance Succubus
- Second Chance: A Ryan Lock Novel
- Second Chance: An Alex Benedict Novel
- Second Chance: End Storm Short Story #2
- Second Chance: Last Chance Rescue Book 5
- Second Chances Are
- Second Chances: A Love Story of Renewal and Tragedy
- Second Child
- Second Collection - Books 4-6
- Second Coming
- Second Death Of Husband
- Second Debt
- Second Eden
- Second Fiddle
- Second Flame: Phoena's Quest Book 2
- Second Genesis
- Second Grave on the Left
- Second Guessing
- Second Helpings at the Serve You Right Café
- Second in Her Class
- Second In Love
- Second Malvern
- Second Marriage
- Second Nature
- Second Seating
- Second Shield
- Second Shield II: The Return
- Second Shift: Order
- Second Shooter
- Second Silent Night
- Second Son: (Jack Reacher Short Story)
- Second Story Man
- Second Street Station
- Second Strike
- Second Take
- Second Time Around
- Second Wind
- Second-Best Bride
- Second-Time Lucky
- Seconde chance
- Secondhand Sight
- Secondhand Spirits
- Seconds
- Seconds Away
- Secrecy
- Secret
- Secret 77
- Secret Admirer
- Secret Adventures: Short Stories of Love and Revenge
- Secret Agenda: Who's Castrating the Wolves of Wall Street?
- Secret Agent "X" – The Complete Series Volume 1
- Secret Agent "X": The Resurrection Ring
- Secret Agent Affair
- Secret Agent Boyfriend
- Secret Agent Father
- Secret Agent Heiress
- Secret Agent Minister
- Secret Agent Reunion
- Secret Agent Sam
- Secret Agent Santa
- Secret Agent Secretary
- Secret Agent Seduction
- Secret Agent Sheikh
- Secret Agent Steve Lover
- Secret Agent, Secret Father
- Secret Agent: Mother
- Secret Alibi
- Secret Anniversaries
- Secret Assignment
- Secret at Skull House: An M/M Cozy Mystery
- Secret Baby, Second Chance
- Secret Betrayal
- Secret Bodyguard
- Secret Bond
- Secret Chambers and Hiding Places (Illustrated)
- Secret Cinderella
- Secret Circle
- Secret City