At a quarter past six I stood at the counter of Miller Hardware on Main with a plain brown bag and paid cash for two smoke detector cameras.

“The batteries are already in,” the man at the register said.

“You want them sending to your phone or just to a card?”

“Both of them.”

He flipped the box over and pointed to the slot with a pencil.

“They only record when there’s light in the room.

People forget that.”

“Then I’ll keep a light on.”