The first thing Gwen Mercer broke was a clay lantern my daughter had made when she was eleven.

I found the pieces beneath the back steps on a Wednesday morning, mixed with wet leaves and shards of blue glass.

The second thing she broke was the lock on my garden gate.

The third thing was the security camera above my garage, and by then she had stopped pretending any of it was accidental.

I watched her through the kitchen window as she stood in my driveway with a red-handled hammer resting against her thigh.

Gwen was sixty-one, tall and carefully dressed, with silver hair that never seemed to move even in the coastal wind.

She had lived next door for eighteen years, and for most of those years she had made sure everyone on Willow Bend Lane knew how respectable she was.

Her charity luncheons raised money for families whose names she rarely remembered.

Her yard won the neighborhood garden contest every summer, largely because she served on the committee that chose the winners.

And she never raised her voice until there was nobody around to hear it.

That morning she looked up at me and smiled.

“You ought to be more careful where you put your things, Claire,” she said.

I walked outside wearing old sneakers and the sweatshirt I had slept in.

“You came onto my property with a hammer,” I replied.

“Did I?”

She tilted her head toward the ruined camera.

“Maybe you should prove it.”

My daughter Maya stood behind the screen door, clutching the strap of her school bag.

She was sixteen, old enough to understand deliberate cruelty and young enough to believe adults would eventually be punished for it.

“Mom, don’t,” she whispered.

Gwen looked beyond me and saw her.

For one brief second, the smile vanished from Gwen’s face.

Then she put the hammer in the pocket of her gardening cart and pushed it toward her house.

“Tell your daughter to stay out of trouble,” she called.

Maya went pale.

I had heard Gwen make ugly little remarks before, but she had never directed one at Maya.

I wanted to follow her across the grass and demand an explanation.

Instead, I closed the gate as far as the broken latch would allow.

“Did she say something to you yesterday?” I asked Maya.

Maya shook her head too quickly.

“We need to go,” she said.

I drove her to school through a light November rain.