Twenty-two years of landlording teaches you to listen — to the creak that means settling versus the creak that means trouble. To the stain that means one leak versus the stain that means the roof is dying. To the sound of a good tenant versus the sound of someone who'll disappear in the night owing three months' rent.

Gerald Hatch knows buildings. But he doesn't know Margaret Yelchin.

She walks into his office on a Tuesday. Pays six months upfront. Cash. Clean bills, counted and banded. Her only condition: after nine PM, don't enter the basement unit. Don't knock. Don't come downstairs.

The unit stays empty. No furniture. No belongings. No sign anyone lives there. But the temperature readings are impossible — the floor radiates ninety-four degrees while the air above it hovers near freezing. The bathroom in 1B grows wider inside than outside. The closet in 2A extends into space that shouldn't exist.

Some foundations hold more than buildings. Some basements contain more than storage. And some tenants aren't renting a place to live — they're renting a place to keep something from spreading.

What happens when twenty-two years of careful property management collides with something that was never meant to be contained? When the most reliable tenant you've ever had isn't paying rent to live somewhere — but to die there?

The answer is waiting in the basement. But after nine PM, you really shouldn't go looking.