The spoiler about Bill Vaughn is that he is somehow connected to Nadia, not biologically though, and if you dont know who Nadia is... ur a little behind on the Spoilers, eh? But maybe Bill isn't dead... i dont really know how he would be connected to Nadia, but if he's still alive thats sorta stupid. I mean, look at how many times you've thought someone was dead, and then they were brought back. I hope they can come up with something new/exciting for big things like Sloane's Endgame, and who the head of the Covenent is, etc. The writers of the show are awesome at adding things to the plot, but the explanations of them are getting old. I'm sick of being surprised with deaths and revivals of characters!