Mia's world is balanced on the edge of a knife. A crimson maelstrom is brewing within the deepest reaches of the forests near her hometown, and if it is not properly contained then she - and everyone she cares for - will be swallowed whole. What hope do a group of children have in the face of such growing animosity? What hope does a human being have against a madness that has been festering for millennia? "Principles" is the sequel to "Machinations" in The Executioner's series, and serves as the final instalment in the trilogy.