Historical clue formulations

• They might be foiled — 2026-01-21
• What synopses summarize — 2022-07-12
• Schemes — 2022-01-04
• Units of land, with or without the first letter — 2021-10-09
• Schemes — 2020-10-07
• Novel ideas — 2018-05-19
• Emulates Lady Macbeth — 2018-03-31
• Plans nefariously — 2017-08-04
• Movie review revelations — 2017-03-26
• Puts on a graph, say — 2012-04-14
• Cabalists' plans — 2009-04-20
• Spots on a graph — 2006-04-23
• They may be brewing — 2002-06-22
• Draws, as a line on a graph — 1997-06-10
• They often have twists — 1994-09-22