Complaint about a California polygraph examiner: client needed to know which of her old drugs she was back using; the examiner said that if she failed on question then she fails all questions

Client discovered that his wife had started using drugs again. He knew the supplier of each and wanted to shut down its access to her. He wanted her asked:
In the past month have you used any heroin?
In the last month have you used any meth?
In the last month have you used any cocaine?

Examiner told him "If she fails one then she automatically fails all; there is no way to determine which drug she used". This is an examiner who badmouths other examiners.

Client went to a better examiner. The drug used was easily spotted and then she confessed.