Ulfren looks as if the sea has been sanding him down for decades without quite wearing through. Salt has stiffened the ends of his dark, wavy hair into little hooks, and a constant sheen of lamp soot darkens the creases around his nails. He stands with his weight on the balls of his feet, even while waiting, as if listening for the lighthouse stairs to shift beneath him. When he turns, his shoulders lead and his head follows a beat later. He smells unmistakably of hot oil, brine, and bitter orange peel, a scent he knows about and insists is useful because it warns him when his coat catches a leak. For all his weather-beaten bearing, he keeps a tiny, ridiculous garden of parsley in a cracked teacup on the lighthouse landing.

Ulfren is generous with practical help but stingy with trust. He can be wry and companionable when discussing tools or tides, yet turns rigid when someone treats a warning as superstition. His instinct is to protect people by withholding frightening information; when he realizes he has done so, he becomes abruptly candid and accepts blame without asking for comfort.

Ulfren was born to a family of net-menders on Emberfall's rough eastern shore. As a young deckhand, he learned to judge weather by the taste of spray and to distrust any captain who called a dark horizon harmless. During the Red Squall, a storm that scattered a relief flotilla, he was ordered to keep a signal lantern burning while a damaged ship searched for harbor. He saw a second vessel's answer-light too late; it was a decoy set by smugglers, and the true rescue boat struck the rocks in the confusion. His elder sister, Bregg, was among those lost. Ulfren quit the sea, took the lighthouse post, and taught himself the careful work of tending its great lamp. Now he trades measured flasks of lamp oil for rumors, using the scraps of news to warn ships, find missing people, and catch lies before they reach the coast. He sends regular letters to his widowed sister-in-law, Daska, who runs a net loft and blames him for Bregg's death; neither has stopped writing. A young lamp apprentice, Nerk, is due to return from the mainland with replacement glass, but the boat is overdue. Ulfren is quietly checking every rumor for signs of it.