The fork never reached my mother's mouth. It hung there, trembling, while my four-year-old daughter stood on her dining chair and pointed across the roast chicken at the woman I had married three weeks earlier. *She's not my new mommy. She's a monster.*

We returned to the house with Detective Mitchell's team.

The front door was locked, and no one answered when we called inside. Marcus checked the security feed, but the hallway cameras had been disabled.

For a few seconds, I considered forcing the door open.

Then I remembered Sarah's note.

The second camera.

If Meredith had found the system, she might have destroyed the visible recordings, but Sarah had hidden the other device in a place no one would think to search.

Marcus led us upstairs.

The miniature camera remained inside the smoke detector above Sarah's old office. Its memory card had recorded the hallway, the study door, and part of the staircase.

We connected it to the laptop.

The latest footage showed Evelyn entering the house, followed by Meredith. They walked directly into the study and closed the door.

For several minutes, nothing happened.

Then Meredith emerged carrying a leather folder.

She looked toward the smoke detector and smiled.

The smile was not the polished expression she used at dinner.

It was colder. More satisfied.

She turned back toward the study.

"You're sure this is everything?"

My mother's voice answered from inside.

"It's what Sarah gave me."

"You told David you didn't have the original recording."

"I said I couldn't give it to him."

"Same difference."

Meredith stepped back into the room.

I leaned closer to the screen.

The audio was faint, but the next sentence came through clearly.

"You were supposed to keep him away from me," Meredith said. "Now he's asking questions about the accident."

My mother replied, "I never agreed to help you hurt Sarah."

"No. You agreed to introduce me to David. You agreed to tell the police she was exhausted and distracted. You agreed to keep the recording hidden."

"I thought you were trying to protect the family."

"You knew enough."

The words struck me harder than any confession could have.

My mother had introduced Meredith to me.

She had concealed Sarah's recording.

She had lied about what happened before the accident.

But had she known Meredith intended to harm Sarah?

The recording did not answer that question.

It continued.

Evelyn's voice trembled.

"You promised me that nothing would happen to the children."

Meredith laughed.

"I never promised you that. I promised you that David would be taken care of."

My mother's voice broke.

"Where is the recording?"

Meredith moved closer.

"Somewhere you will never find it."

Then she reached toward the smoke detector.

The image shook as her fingers touched the ceiling. She seemed to inspect the device but did not remove it.

"There's another camera," she whispered.

I froze.

She knew.

Meredith stepped away from the detector and returned to the study.

Minutes later, the front door closed.

The footage continued for another hour, showing my mother sitting alone at the kitchen table with her face in her hands.

Then the video cut to black.

Marcus checked the system.

"The power feed was disconnected remotely. The device stopped recording at 10:22."

Detective Mitchell turned toward me.

"David, we need to find your mother and Meredith. We have evidence of conspiracy, but we still need the original recording and a clear account of what happened to Sarah."

I called Evelyn.

No answer.

I called Meredith.

The phone was switched off.

Then I noticed a final file on the memory card.

It was dated the evening Sarah died.

The camera showed the hallway at 6:41 p.m. A figure entered Sarah's office carrying a small black case.

The face was visible for only a moment.

It was not Meredith.