Elias Rowe was hired to model the ocean.
Not to fight it.
When a late-season storm begins building offshore, Elias is assigned to monitor intake pressure fluctuations at Port Lucent's tidal gate system - a massive coastal defense structure designed to keep the sea exactly where it belongs. On paper, the system is flawless.
In reality, it's already drifting.
Jonah Keller has spent years diving into the infrastructure no one else wants to touch - crawling through turbine corridors, intake chambers, and valve housings while the Atlantic presses in on every reinforced seam. He trusts bolts and current. He trusts the work.
He doesn't trust simulations.
When system readings begin conflicting with live intake behavior, Elias and Jonah are forced onto the same inspection cycle - long nights in damp access corridors, emergency dives in rising surge, and silent shifts where mutual reliance becomes unavoidable. The closer the storm gets, the more the data refuses to cooperate.
And the more the system starts responding to something it was never programmed to do.
Then unauthorized firmware is discovered inside the intake response sequence - time-stamped during Jonah's last logged dive.
Now Elias is assigned to audit Jonah's inspection reports.
As corporate pressure mounts to reduce inspections and the storm moves into landfall, professional procedure becomes personal liability. Trust fractures under scrutiny. And when the intake begins lagging under live surge load, manual override becomes the only thing standing between Port Lucent and catastrophic flooding.
Second descent required.
Water rising inside the corridor.
Override lock jammed.
Jonah bracing Elias against incoming current while the sea tries to drag them both under.
They were never supposed to stay this long.
They were never supposed to stay for each other.
FAULT LINE is a high-tension M/M romantic suspense novel about pressure - structural, environmental, and emotional - and what happens when the only person you trust might also be the one you're ordered to investigate.