My grandson came up from the basement pale and shaking. ‘Grandma, pack a bag. We’re leaving. Don’t call anyone.’ I was confused. ‘What’s wrong?’ ‘Please, just trust me.’ Twenty minutes later, my children were calling nonstop… ‘Don’t answer them!’

Chapter 1: The Invisible Poison

My grandson came back up from the basement, his face the color of old parchment. He sat down across from me at the kitchen table, his hands gripping the edge so tightly his knuckles turned white. He didn’t speak for a long moment, just stared at the oak cabinets his grandfather had built forty years ago.

“Pack a bag,” Owen finally whispered, his voice cracking. “Right now.”

“What? Why?” I asked, setting down my coffee mug. The ceramic clinked loudly in the sudden silence. “Owen, you just got here.”

“We’re leaving, Grandma. Don’t call anyone. Don’t text Dad or Aunt Jessica. Just go upstairs, grab your medicine and a change of clothes. We go now.”

“Owen, what’s wrong? You’re scaring me.”

“Grandma, please just trust me,” he pleaded, and for the first time since he was a child, I saw genuine terror in his eyes. “We need to leave this house immediately. It’s not safe.”

I stared at him. My grandson, who worked high-steel construction, who never scared easily. His hands were shaking.

“This is my home,” I said, my voice trembling. “Walter built this house. I’ve lived here for forty years.”

“I know,” he said, pulling out his phone. “But it’s not safe anymore. Look.”