The thick fog rolled into the rocky harbor just before sunset.
Fourteen-year-old Abigail stood on the porch of the keeper's cottage and sighed.
Her father had rowed to the mainland earlier that morning for supplies.
Now, the heavy mist meant he was definitely stuck there for the night.
Abigail knew exactly what she had to do.
She grabbed a heavy brass key and marched up the winding spiral staircase.
The lighthouse tower was cold, but she felt a spark of determination.
At the very top, the massive glass lens waited in the fading light.
Her father had taught her the precise routine dozens of times.
First, she carefully polished the curved glass panels with a soft cotton cloth.
Every surface had to be spotless to reflect the beam properly.
Next, she filled the reservoir with oil and trimmed the thick wick.
Her hands shook slightly as she struck a match to light the lamp.
A warm, golden glow immediately filled the small, circular room.
Abigail smiled and watched the brilliant beam pierce the dense gray fog.
However, her important work was far from over.
She stayed awake through the long, quiet night to monitor the flame.
Every hour, she cranked the heavy iron weights that kept the lens turning.
The rhythmic sound of the gears was surprisingly comforting in the dark.
By the time dawn finally broke, the fog had started to clear.
Abigail looked out the window and spotted her father's small wooden rowboat.
He was heading back to the island across the calm, sparkling water.
She extinguished the lamp and stretched her tired, aching muscles.
When her father stepped onto the dock, he looked up at the tower.
He gave her a proud wave, knowing she had kept the harbor safe.
Abigail waved back, feeling more capable and responsible than ever before.