Possible Clues:

• “Hamlet” actor Gibson in Ireland?
• Histrionics alarmed Mo terribly
• Model stumbling — damage after twisting — a scene that’s overwrought?
• Sensational movie or play
• Sensational entertainment
• Memory initially affected after air stopped short, causing OTT behaviour
• Sensational stage work
• Movie serial genre
• Mother grabs English lord -- terrible song and dance
• Silents genre