My fiance is about to take his first polygraph in sex offender treatment.  We think it is going to be a sexual history polygraph and we are trying to find out what to expect and how to handle the situation.  What are the questions they will probably ask before they hook him up, what should he expect?  The examiner giving the test has so far failed every member of his group he has tested, but amazingly the one guy who went to another polygrapher passed???  Coincidence, I don't think so.  Does anyone have any insights or suggestions for us???