I came home expecting a normal family reunion. Instead, I found a mystery waiting inside. The truth left me with more questions than answers.

I came home from a three-day business trip expecting noise from the kitchen, Lily racing toward the door, and Clara asking why I had ignored at least half the pictures she had sent me while I was gone.

Instead, the first thing I heard was the scrape of a mop across tile.

My suitcase was still in my hand when I walked into the kitchen and saw my wife and six-year-old daughter on the floor.

Clara was curled beside the stove with one arm wrapped around Lily, as though protecting our daughter had been the last thing she had enough strength to do.

Clara’s face looked gray.

Lily’s lips were blue.

For one second, my brain refused to accept what my eyes were seeing.

Then I dropped my suitcase and reached for my phone.

My mother, Evelyn, stood a few feet away holding a mop.

She looked annoyed rather than frightened.

“Your wife is just lazy,” she said.

I was already dialing emergency services.