I tried to insert the key into the deadbolt, but my wrist wobbled, the metal scraping against the brass plate.

“Need some help with that?” Greg asked.

“No,” I said, my voice sharper than I intended.

“I have it.”

I forced the key into the slot and turned it, listening to the heavy click of the lock sliding back.

“Let me know if you need that battery,” Greg said, stepping back into his apartment.

“I will,” I said.

I stepped into my dark living room and shut the door behind me, leaning my back against the wood.