I was called in for a first round with a few associate/ AVP level team members, and then later as a final to meet the Director. Typical fan fare to be expected for a strategy interview -- There were a couple of a cases. At one point during one of the cases, he told me that my response wasn't the "caliber expected of an average person off the street, much less a seasoned McKinsey consultant." (I've been at McKinsey for 3 years and have never been treated to or spoken to in that way.) I was quite proud of myself for not walking out in a huff at that point. Got a call back after, and was brought back to see the same guy. I only went because I assumed it might be an offer/ apology. He told me that he decided to give me a second chance. I did one case to be polite and said I needed to go back to work. By the way, asked the guy what consulting firm he had worked for -- Booze (i.e. not event a strategy consulting firm).