SHE SWUNG AT MY MOTHER.

For one suspended heartbeat, the whole room seemed to detach from time.

I twisted hard enough to wrench my own shoulder and saw the aftermath in fragments. The bat had not hit Mason. By some instinct older than pain, Ruth had thrown herself sideways again, trying to take the blow where his small body would have been. The end of the bat had struck across the upper part of her back and side of her neck as she turned. Her body had folded strangely after the impact, and she slumped against the coffee table before sliding to the floorboards.

The bat slipped from Vanessa's hands and clattered near the table leg.

For half a second nobody moved.

Then everything moved at once.

Mason crawled toward Ruth on his knees, sobbing her name. I lunged for the bat and kicked it under the sofa. Vanessa backed away, her chest heaving, one hand flying to her reddened cheek as if she had somehow become the injured party in her own mind. The living room that had once been staged for cozy family photos now looked like a crime scene: broken door frame, overturned magazine stack, coffee spilled from a mug on the table, my mother crumpled on the floor trying and failing to get enough air.

"Don't touch her," I said to Vanessa.

I had never heard my own voice sound like that.

She stared at me and actually had the nerve to say, "Look what you made me do."

I dropped beside Ruth. Her eyes were open, but unfocused. Mason clung to her cardigan and cried into the sleeve. I touched the back of her head, then her shoulder, trying not to move her too much.

"Mom. Stay with me."

She made a low sound that might have been my name.

I took out my phone and called 911 with hands that wouldn't stay steady. When the operator answered, I gave the address and forced myself to speak clearly.

"My wife assaulted my mother with a baseball bat," I said. "My son is here. My mother may have neck or back injuries. Send an ambulance and police now."

Vanessa's expression changed again at the word police. This time the fury cracked. Under it I saw calculation spin into place.

"Jace slapped me," she said loudly, like she was already dictating a statement into the air. "He kicked in the door and attacked me. Ruth fell when she tried to interfere."

Mason looked up at her with raw disbelief, the kind only a child can show without hiding it.

"You hit Grandma," he cried. "You hit her twice!"

Vanessa snapped, "Be quiet, Mason."

That one sentence told me everything about how long this had really been going on.

I put the phone on speaker and set it on the floor beside me so I could keep one hand near Ruth. The operator asked if the assailant was still on scene. I said yes. She asked whether there were weapons. I said yes, but I had kicked the bat away. She told me not to move my mother unless necessary.

Ruth's breathing was shallow. One side of her face had gone pale. She tried to push herself up and flinched so violently that I stopped her immediately.

"No. Stay down. Ambulance is coming."

Mason crawled fully into my lap and shook against me. "I told her to stop," he whispered. "I told her I did my reading."

I looked at him.

"What?"

He swallowed hard. "She said I lied. Grandma said I didn't. Then Vanessa got the bat from the hall closet."

The bat from the hall closet.

Not a random object close at hand. A choice.

Outside, sirens were already growing louder.

Vanessa suddenly walked toward the foyer mirror and stared at her own face. Even then. Even with my mother on the floor and Mason sobbing beside her, Vanessa touched the red marks on her cheek like she was checking whether the bruising would photograph clearly.

When the first officers stepped in through the broken doorway, she turned toward them with tears already pooling at the exact corners of her eyes.