Alder Tull was born on the High Quay of Lordinium, the son of a stevedore father and a mother who died of harbour fever when he was nine. His father, Garin Tull, raised him on the timetable of the tides: up before the fish market, work by lamplight, and never a drop of drink, because Garin had watched his own father drink himself off the Quay into the grey water and had made Alder swear the same oath at eleven.
The oath is the only scripture Alder has ever needed. When Peg Leg Carl came back from the north eleven months ago with a hold of impossible fruit and a crew that would not meet anyone's eyes, Garin Tull signed on for the return voyage because the pay was triple stevedore wages and because he wanted to leave Alder something better than a hook and a coil of rope. He did not come home. Carl's crew list has eleven names and Carl will speak nine of them, and Alder has learned to count.
His uncle Brannoc Tull, Carl's first mate of twenty years, has been the only family Alder has left. Brannoc took him in, taught him the boarding pike on the Saltspray's deck in winter, and never once lied to him — until now. Brannoc has already packed a second sea-chest, oiled and corded, for a man who is not coming back, and Alder has decided the chest is his: not as a grave-gift but as a debt to be collected in person, on whatever beach his father is owed.
He has spent the year as a quay guard, breaking up press-gangs and Choir collectors with a boat-hook, learning that he is good at violence and uneasy about how little it costs him.
Alder does not trust Peg Leg Carl, does not trust the Cathedral, and does not trust the fog. He trusts rope, high ground, and the four people on the expedition who have told him the truth so far. He signed the charter because the Saltspray is the only ship going north, and because if his father is alive he is on that island, and if he is dead, the island owes the Tull family a body and a story, and Alder intends to collect both.