Why a Second Job Interview?

by Joe
(Indiana)

I did well in a recent job interview and have been invited back for a second interview. My boss happens to be a friend of mine and knows me quite well. He actually opened a door for me there.

So, why then am I being asked to come in for another round of interviews? He told me I will be meeting with 3 Directors.

Any advice on what I should do differently this time around?