Who said "The game is afoot."?

This quote is attributed to John Watson.

The game is afoot. - John Watson

"The game is afoot."

John Watson Motivation

"I'm a doctor, not a magician."

"You know what? I don't actually care what you think."

"Afghanistan or Iraq?"

"How did you know about the bullet wound?"

"I believe in working hard for what you want."

"Never underestimate the power of determination."

"I don't need a reason to fight."

"The most important thing is the mission. Nothing else matters."