There are personal secrets, group and world secrets, and finally...Barge secrets. And that third one especially is relevant to everyone's interests.

You are quiet, unobtrusive, and very, very perceptive. Without endangering yourself, you are capable of discovering much in the day to day. Meanwhile I, as humble painter and chef, can do the same. There are others who are in uniquely good positions for this.

There is only one limitation to my powers, however. Nothing told me in confidence, as patient to doctor, may be repeated.