Dava never expected to find herself staring down the wrong end of a revolver in the prologue (or is it chapter one?) of a heart-pounding psychological thriller. But now that she has, there's just enough time for an obligatory flashback to reflect on just how she got here before the gun goes off.How I Became a Vengeful, Psycho Killer is a suspenseful, sexy, self-aware thriller that knows the rules and plays by them all; with a surprise ending even...