I am indebted to a number of individuals who have provided information essential to the telling of this story. In alphabetical order, they are:
Dr. Jan Davies, Faculty of Medicine, University of Calgary.
Sergeant Rick Demchuk, Tactical Unit, Calgary Police Services
Detective Paul Malchow, Homicide Unit, Calgary Police Services
Curtis Mayert, stockbroker
Christine Silverberg, former Chief, Calgary Police Service, now a lawyer in private practice
Robin Stoney, Calgary Police Service (Ret'd)
I am also grateful to Mercedes Ballem, daughter and "first cut" editor, Barry Jowett, editor with the "director's cut," and Beverly Slopen, my agent. Special thanks to Erin Dykstra, legal assistant, for coping so well with a succession of drafts.