Historical clue formulations

• Common motive in a murder case — 2026-08-24
• Payback — 2015-10-16
• Payback — 2015-06-03
• "A dish best served cold" — 2011-07-23
• It's sweet, it's said — 2007-07-14
• Wronged person's cry — 2005-06-23
• Crime motive — 2001-04-13
• Whodunit motive, perhaps — 1998-05-10