My vision blurred. I was seconds from screaming when her phone rang. She answered immediately.

“Yes,” she said. “I’m here. No, she’s at work. I told you—she never checks.”

She paced while talking, and I caught a clearer glimpse of her: early thirties, dark hair pulled back, completely ordinary. That somehow made it worse.

“I’ll be gone before six,” she said. “Like always.”

Always.

After she left the bedroom, I stayed frozen, counting my breaths. When the front door finally closed, I waited another ten minutes before crawling out.

Then I called the police.

They arrived quickly. I showed them the video, my voice trembling as I explained everything. During their search, they found what I’d missed: a spare key hidden behind the outdoor electrical panel, food wrappers dated from days I hadn’t been home, fingerprints on surfaces I rarely touched.

That evening, they found her.

Her name was Natalie Pierce. She had once worked as a cleaner in the neighborhood. Months earlier, she’d copied my spare key without me noticing. After losing her job and her apartment, she began “borrowing” my house during the day.