" Houses are like people, Agent Lemieux. They have secrets. I'll tell you something I've learned.'

Armand Gamache dropped his voice so that Agent Lemieux had to strain to hear.

'Do you know what makes us sick, Agent Lemieux?'

Lemieux shook his head. Then out of the darkness and stillness he heard the answer.

'It's our secrets that make us sick. "

― Louise Penny , The Cruelest Month (Chief Inspector Armand Gamache, #3)