Historical clue formulations

• Literary character who "alone in the ranks of mankind, was pure evil" — 2022-08-20
• Evil alter ego in a Robert Louis Stevenson story — 2020-06-16
• One half of a "strange case" — 2018-05-10
• Wild side of a split personality — 2016-03-16
• Literary alter ego — 2015-12-02
• Half of Stevenson's "strange case" — 2013-08-20
• Half of a title role for John Barrymore or Spencer Tracy — 2012-01-29
• Robert Louis Stevenson title character — 2010-12-12
• One of two title roles (in the same film) for Spencer Tracy — 2008-07-13
• Evil side of literature? — 2006-08-30
• Personification of humanity's dark side — 2004-01-31
• One subject of a "Strange Case" in literature — 2002-11-10
• Stevenson scoundrel — 2002-01-17