The Four Series Novels

Yonaguni Monument: Natural Formation or Sunken City Beneath Japan?
Yonaguni Monument: Natural Formation or Sunken City Beneath Japan?
Doggerland: The Drowned World Beneath the North Sea
Doggerland: The Drowned World Beneath the North Sea
The Channel Tunnel: How Engineers Joined Britain and France Under the Sea
The Channel Tunnel: How Engineers Joined Britain and France Under the Sea
Øresund Bridge–Tunnel: How the Engineering Marvel Between Denmark and Sweden Dives Beneath the Sea
Øresund Bridge–Tunnel: How the Engineering Marvel Between Denmark and Sweden Dives Beneath the Sea
Rushed: Christopher (The Four 4.50)
Rushed: Christopher (The Four 4.50) by Sloane Kennedy
R LGBTQ MM
Forbidden: King (The Four 4)
Forbidden: King (The Four 4) by Sloane Kennedy
R LGBTQ MM
Forgiven: Con (The Four 3)
Forgiven: Con (The Four 3) by Sloane Kennedy
R LGBTQ MM
Foreseen: Lex (The Four 2)
Foreseen: Lex (The Four 2) by Sloane Kennedy
R LGBTQ MM
Forgotten Luca (The Four 1)
Forgotten Luca (The Four 1) by Sloane Kennedy
R LGBTQ MM