Harry Potter: London's Dog

Crossover with the Rebecca Cooper Trilogy (Terrier, Bloodhound, etc.). AU. The Foxhound has many other names in London, including Guard Dog, but none of them show who she really is; a wizard, keeper of demons, shape shifters and the Lady Guardswoman of Buckingham Palace and the Dogs of Ashton Street. She is Alice Potter and Voldemort best beware...the Foxhound has his scent.