A century ago, lighthouse keeper Frank Kimbal lit the oil flame that guided ships safely into Port Huron’s harbor. But during Prohibition, that same light exposed smugglers moving under cover of darkness — turning a beacon of safety into a weapon of law enforcement.

Today, the fight against smuggling hasn’t dimmed. It’s evolved. From Colombia’s coca fields to the Blue Water Bridge, cocaine’s modern supply chain runs on global speed — and cutting-edge border technology now takes the place of the lighthouse beam.

In this episode, Rayvn Rowe Investigates the transformation of vigilance — from oil lamps to handheld X-rays, from night patrols to digital scanners. How has the war on smuggling changed, and what remains the same beneath the bridge?

Smuggling brings more than contraband across the Blue Water Bridge — it brings money, and money always leaves a mark. In The Cost, Rayvn Rowe uncovers the hidden ways the cocaine trade filters through St. Clair County’s economy: couriers spending cash on cars and bars, shadow businesses propped up by dirty money, and federal funding that follows every bust. But the balance sheet isn’t what it seems. Behind the payouts and contracts are families torn apart, schools strained, and futures lost. The trade profits a few — but the cost is paid by everyone else.

At the Blue Water Bridge, five thousand trucks cross each day — but some carry more than auto parts. In The Chain, Rayvn Rowe traces the hidden economy moving through Port Huron: from Prohibition-era whiskey runs to today’s cocaine corridors. Drivers, couriers, blind mules, and the inspectors who read trailers like sheet music are all links in a system built on risk, profit, and deception. This is the story of how one truck in five thousand can change everything.

Lines on the Water opens at midnight on the St. Clair River, a small boat without lights and a heat signature that triggers a rapid intercept. Rayvn Rowe maps the real defenses at Port Huron: shoreline sensors, Air and Marine aircraft, Coast Guard patrols, and the command centers that stitch it together. Then she tests that system against three documented cases: a June 25, 2024 river landing that ended with arrests on both shores, an October 26, 2023 jet-ski run tied to 36 Glock pistols, and a June 12, 2025 Blue Water Bridge stop that uncovered 187 kilograms of cocaine. Solo voice, no reenactments, only verified records. How the net works, where it fails, and what it costs.