Halda was born in Tallymarket, a timber town of some four hundred people on the Sixth Ring, where her father Orrin Fenn was the town's bolt-wright — the man who kept the great key-bolts that held the town's Sliver to the ring. Halda grew up in the back room of the Weighed Anchor, the only inn in town, watching her father work and learning to count everything: grain, bolts, days, debts. When she was young, her father taught her that counting is how you know a Sliver is still keyed, and that a tally is a promise written down. She took the lesson literally, and she has never unlearned it.
Twelve years ago, a tally went missing from the Tally-House — a bolt-tally, the record of a key-frequency that Orrin himself had set. The town blamed him. A complaint was signed by eleven townsfolk, the debt-roll carried his name, and Orrin Fenn left on the north road and never came back. Halda was left with a mason's maul, a notebook, and the conviction that the ledger was wrong. She grew up swinging the maul by day and copying debts by night, and she learned to read a ledger the way other people read faces — for the lie underneath the numbers.
She left Tallymarket as soon as she was old enough to carry a soldier's coat, and she served on the Sixth Ring as a Fighter, where her tally-work and her father's name earned her grudging respect from Warden foot-soldiers and caravan guards. She learned to fight with a maul in two hands and a handaxe in reserve, and she learned that a written record is the only weapon that cannot be taken away from her. She kept the list of everyone who signed the complaint against her father, and she kept the notebook, and she waited.
She came home to the Tally Reaches the week the town of Tallymarket lurched two fingers to the north, carrying her father's old tally-hammer and a list of names. The floor of the tally-house was still ringing like a struck bell, and the town's key-ledger was lying again. Halda Fenn, the Ledger-Blade, intends to find out who has been lying, for how long, and why — and she intends to write it down.