I have a candidate who had two excellent phone screens, but when he showed up for an interview, was shaking due to nerves. Despite his obvious nervousness, he did well enough in the first hour, demonstrating both technical ability and cultural fit.
Evidently, however, he starting going down hill over the next two hours, stammering his way through answers and making a few missteps.
The first set of interviewers said "definite hire", the next two were lukewarm, and the last were mostly negative. One of the big points they made was that he was too nervous to get a feel for what he's really like. We're aiming for consensus, and our impressions were so different that we really don't have it.
I wouldn't normally do this, but the first set was so strong that we'd like to give him another chance to show himself, particularly to the later interviewers. How can I create an environment that sets the candidate at ease and helps him represent himself well? It seems that the triple panel of interviewers wasn't working here.