Sir Hereward and Mister Fitz (Stories of the Witch Knight and the Puppet Sorcerer)

Sir Hereward: the only male child of an ancient society of witches. Knight, artillerist, swordsman. Mercenary for hire. Ill-starred lover.
Mister Fitz: puppet, sorcerer, loremaster. Practitioner of arcane arts and wielder of sorcerous needles.
Sir Hereward and Mister Fitz: godslayers. Agents of the Council of the Treaty for the Safety of the World, charged with the location and removal of listed extra-dimensional entities, more commonly known as gods.
Together, they are relentless travelers in a treacherous world of magic, gunpowder, and adventure.
Compiled for the first time ever, these eight magical stories - plus an all-new tale, "The Field of Fallen Foe" - featuring fabulous, quintessential Garth Nix protagonists Sir Hereward and Mister Fitz comprise a must-have adult fantasy collection for fans and those about to discover the witch knight and his puppet sorcerer for the first time.