He was the boy who taught Jonah how to breathe underwater... and the ghost who left him drowning on dry land for eight long years. Now Killian Saint is back (taller, scarred, and twice as dangerous), walking into Jonah's failing dive shop like the past never happened. One look at that crooked smile and lightning-bolt scar, and every promise Jonah made to forget him goes straight out the window. One private night dive to a forbidden wreck. One gold cross that should have stayed buried. One secret that could still destroy them both. Killian swears he only came back to keep Jonah safe. Jonah knows better: some tides pull you under whether you fight them or not. Between stolen kisses in black water and desperate nights tangled together on a shop floor that smells like salt and second chances, Jonah discovers the truth: Killian never stopped belonging to him. And Jonah has never stopped being the only person who can drag Killian back to the surface.But when the man who once burned their world down resurfaces with a final demand (the remaining crosses for Jonah's life), one thing becomes crystal clear. Killian will protect Jonah with everything he has... even if it means sinking them both. Saltwater Saints is a scorching, standalone second-chance MM romance packed with angst, high-stakes underwater action, and enough possessive, obsessive love to leave you breathless. Explicit heat. Hard-won happily ever after guaranteed.