Nico and the Lock with Nine Notes
Nico had the first four notes. He'd had the first four notes for three nights, and on the third night he had thrown the whistle into the ferns.
He had gone back for it about ten minutes later. Nobody mentioned this.
"Again," said the heron, who was extremely old and extremely unbothered.
"I've done it a hundred times."
"You've done it forty-one times. I've been counting." The heron shifted from one leg to the other. "The fifth note is a half-step down. You keep going up because up is easier."
Nico blew the sequence. Four notes, clean. Fifth note, up. The door in the stone stayed a door in the stone.
"Down," said the heron.
He tried again. Down, but too far.
Again. Too far the other way.
Again — and something clicked over in his ear before it clicked in his fingers, the way it does, and the fifth note came out exactly right and hung there in the cold air sounding like it had always been obvious.
The stone made a sound. Not opening. Just a sound, low, like a big animal turning over in its sleep.
Nico stared at it.
"Five," said the heron.
"There's nine."
"There's nine," the heron agreed. "Two nights ago there was also nine, and you had four."