This is a short article - the content on it is as much as is known from the Shades of London.

Margo Riley was a Shade who died in 1993 during the 'King William Street Incident'. Margo's body was across a desk, and she was the first to be found by Sergeant Maybrick and the other officers who arrived at the scene. Margo had been an associate of Alexander Newman. Sergeant Maybrick suspected that Newman had killed Margo and her other comrades in a mass murder-suicide.