Dinner seemed completely normal at first. Then my son and I suddenly felt unwell. What I overheard afterward raised serious questions.

I listened intently as he carried the rustling trash bag back toward the garage, his boots echoing loudly on the linoleum.

“I cleaned everything up, so there is nothing left on the table or in the sink,” Christopher said into his phone as he walked.

“Good, make sure you park down the street so it looks like you were out running errands,” the person on the other end advised him.