Related Clues:

• Pretend not to be capable of speaking outside Millennium Dome
• Quiet performance mainly in movement, eerie initially
• One might be trapped in a box
• Absurd situation
• One who values actions over words?
• Charades skill
• Performer in a psuedo-box
• Performer who might act like they're trapped in a box
• Performer who may pretend to be in a box
• Silently act out (a role)
• Silent show
• Pretend to play two different but identical notes
• I am upset, your setter? I am speechless!
• One who’s right to remain silent
• One who's acting out?