A single folder sat on the flash drive.

Its name was:

PROJECT ECHO

There were dozens of files inside—old photographs, scanned documents, audio recordings, and one video file dated just three days before my parents died.

My pulse hammered in my ears.

I clicked the video.

The screen flickered to life.

At first, it looked ordinary. My father sat at a kitchen table, staring directly into the camera. My mother stood beside him, her face tense.

Then my father spoke.

“If you’re watching this, something has gone terribly wrong.”

A chill crawled down my spine.

My mother reached for his hand.

“We’ve discovered something we were never supposed to find,” she said.

My father nodded.

“If anything happens to us, it won’t be an accident.”

My breath caught.

The video continued.

My parents explained that they worked for a technology company that had secretly been selling sensitive government research to foreign buyers. They had uncovered evidence and planned to expose it to federal authorities.

Then my father’s expression changed.

“There is only one person we trust with our daughter.”

My stomach twisted.

Thomas.

The screen froze briefly before continuing.

“If something happens to us, Thomas will protect her.”

Tears filled my eyes.

Everything I had ever known suddenly felt unstable.

Had Thomas known all this time?

Had he hidden it from me?

I opened another file.

This one contained emails.

Hundreds of them.

Many were between my father and Thomas.

The final exchange happened the night before the crash.

My father’s message read:

“If we don’t make it tomorrow, promise me she’ll never know. Let her have a normal life.”

Thomas replied only minutes later.

“I promise.”

I sat back, stunned.

The room felt smaller.

Suddenly, a sound echoed from the hallway.

A floorboard creaked.

I looked up.

The house was supposed to be empty.

Slowly, I stood from the desk.

Another creak.

Someone was inside.

“Hello?” I called.

No answer.

My heart pounded.

The hallway remained dark.

Then I heard the unmistakable sound of a door closing downstairs.

I rushed out of the office and hurried toward the staircase.

By the time I reached the first floor, the front door was swinging gently open.

Whoever had been there was gone.

But something lay on the floor.

A photograph.

I picked it up.

My hands immediately began to shake.

The photo showed my parents.

Thomas.

And a fourth person.

A woman.

The same woman I had seen dropping the envelope into the mailbox.

Written on the back, in my father’s handwriting, were five words:

“She knows the whole truth.”

Beneath that was an address.

And at the very bottom:

“Trust her only after she tells you about the lake.”

I stared at the words.

The lake?

I had never heard my parents mention any lake.

Then my phone rang.

Unknown number.

For several seconds, I hesitated before answering.

“Hello?”

A woman’s voice whispered urgently:

“You opened the drive.”

It wasn’t a question.

It was the woman from the photograph.

Before I could speak, she continued.

“Listen carefully. They’re watching Thomas’s house. If you want answers, leave now.”

My blood ran cold.

“Who are you?” I demanded.

A pause.

Then she said:

“My name is Claire. I was in the car with your parents the day they died.”

Silence.

The world seemed to stop spinning.

“That’s impossible,” I whispered. “The police said there were only two victims.”

Another pause.

“That’s because someone made sure nobody knew I survived.”

Then the line went dead.