The accused brother was described as being (something along the lines of) ........."the most unco-operative subject the lie-detectorist (?) had ever encountered". He refused to give a straight "yes" or "no", preferring to answer "yes, sir, that's right/ no, sir, I didn't" and wouldn't sit still in the chair, and therefore the results were unable to clear him.
All the other family members passed with flying colours...........
I work from home..............(that's my excuse and I'm sticking to it !!) :o)