Related Clues:

• Main track's out of the way
• Whispered remark in a camp
• Whispered stage line
• Leaving London area, somewhere to spend the holidays in private
• Word after 'cast' or 'step'
• Step __
• Off-mic comment
• In reserve — confidential remark
• Word after "brush" or "pull"
• 'All joking ___ . . .'
• Stage remark akin to thinking aloud
• Line heard by the audience but not by other characters
• Actor-to-audience remark
• Step __ (bow out)
• Theatrical device and switch found in fire disaster