Related Clues:

• "Quiet on the ___!"
• Be a major player?
• Evil brother of Osiris
• Earn an Obie, maybe
• Tennis match part
• Perform on a stage
• Step into character
• Nightclub performance
• Drama division
• All prepared
• A fraction of some plays
• All in place
• Harden, as plaster
• Become firm
• Area of expertise