Possible Clues:

• Aside
• House address
• Aside from male, we got upset when his agent turned up
• Actor's aside
• The confidence of one taking part
• It's meant to be overheard
• Publicly quiet word with press having failed to hide a woman's secret?
• House address that's particularly exclusive
• Ostensibly quiet words heard all over the house
• Dreadful prig - he was set aside