Quotes from book
The Mysterious Benedict Society and the Prisoner's Dilemma

Name: The Mysterious Benedict Society and the Prisoner's Dilemma
Author: Trenton Lee Stewart

Trenton Lee Stewart

The Mysterious Benedict Society and the Prisoner's Dilemma is a 2009 children's novel written by Trenton Lee Stewart and illustrated by Diana Sudyka. It was originally the third and final book in The Mysterious Benedict Society series. However, in 2019, it was announced that the title would be followed by a new adventure, The Mysterious Benedict Society and the Riddle of Ages.

“Now listen, we need to be quiet as mice. No, quieter than that. As quiet as… as…”
“Dead mice?” Reynie suggested.
“Perfect,” said Kate with an approving nod. “As quiet as dead mice.”

Trenton Lee Stewart book The Mysterious Benedict Society and the Prisoner's Dilemma

Source: The Mysterious Benedict Society and the Prisoner's Dilemma