Real Name: Unknown.

Occupation: A faceless anonymous columnist at Tatler. Specializes in taking down social climbers with scathing wit.

Rumor Has It: Lady F suspects it’s actually her cousin Arabella, whom she once caught stealing her La Prairie serum.

Facts: Anonymous. Dangerous. Writes in italics.

Known For: Exposing affairs with footnotes.

Mystery Level: Agatha Christie meets Succession.

Lady F Says: “Her vocabulary is Oxford. Her intent is war.”