Australian writer of detective fiction, under the pseudonyms Waif Wander and W.W. She was one of the world's earliest women to write detective fiction, and probably the first to write from the viewpoint of the detective. A prolific storyteller, in all she wrote over 500 detective stories over 40 years, most featuring Detective Mark Sinclair. She is best known for The Detective's Album, the longest-running early detective serial anywhere in the world. Narrated by detective Mark Sinclair,