E. and H. Heron was a collective pseudonym used by the English writers Hesketh Prichard (1876-1922) and his mother, Kate O'Brien Ryall Prichard (1851-1935). "Hex" was an explorer, cricketer, naturalist, soldier, and travel writer. Kate, also an intrepid globetrotter, voyaged with her son to many remote locations; Rio Caterina, in Patagonia, is named after her. In addition to creating Flaxman Low, one of the first modern occult detectives in fiction, the duo wrote stories about Captain Rallywood and Don Q.

Alexander B. Joy earned a PhD in Comparative Literature from the University of Massachusetts Amherst. He is the author of Legend of the River King.