The last memory that the detective uncovers is of having been caught, tied up, and at the mercy of the villainous preacher. Showing that she's far from helpless, she takes a sharp rock behind her and quickly cuts through her binds, shoving the man down into a dark hole and crucially injuring him. Essentially, this is the revelation that she won before the game even started.
"There will be no more murders here!"
The Shadow of Karkhala
The detective aiding the angel Raphael by stabbing Asmodai in the back with the ritual dagger and ending his evil forever.