Doyle's innovative approach dispenses with set changes while placing the action in a black and white arena that suggests a dreary psychiatric ward. The story begins with a terrified young man in a straitjacket surrounded by people in white robes. As he sings the musical's opening words "Attend the tale of Sweeny Todd," we are summoned into his disturbing world. There is no turning back. The effect was as if someone had snapped a whip and commanded our attention.