I knew when Walder Frye called Talisa in front of him to look her over that it was NOT going to end well for her. I thought he'd just murder the wife somehow/someway and be all "screw you, Robb Stark!" Not KILL 'EM ALL. I mean WTF. WTF?!?
DH has read the books, so he knew what was coming. I knew something big was up when Catelyn freaked out about the song being played. In the books, it was a 'warning' song written after one of Tywin Lannister's battles where someone had tried and failed to screw him over and the warning to everyone after that battle. Lannister's always pay their debts.
Someone posted this .gif on my Twitter illustrating the reaction of people who are TV fans of GoT vs. people who have read the books in regards to this weeks episode. Very accurate.