The kids next door were always suspiciously quiet until they started building a treehouse. At first, I thought it was harmless fun, but then came the strange, late-night noises. Curiosity drove me to investigate while they were away and what I found chilled me to the core.

I’ve always been a nosy neighbor. Call it a character flaw, but at 55, I’ve earned the right to keep tabs on my little slice of suburban paradise. When the Fogg family moved in next door two years ago, I thought they’d add some spice to my humdrum days of soaps and crosswords…