Historical clue formulations

• Second story? — 2017-08-06
• What "II" or "III" may indicate — 2014-05-10
• "The Dark Knight," for one — 2009-11-29
• "Son of" story — 2008-05-22
• II — 2006-05-12
• Title with a number, perhaps — 2006-05-07
• Part two — 2000-02-14
• "Rocky II," e.g. — 1997-03-11