Fantastic premise, and fantastic characters. Hardly any of them are nice, and they're all working separate agendas, leading to a story that's both interesting and complex and painted almost entirely in shades of grey. It is in fact almost uniformly excellent until it gets to the end, and the end is where it all fell apart for me. I didn't find it convincing on any level, and it kind of dragged the rest of the story down by association. Which is a real shame, but there you are.