Updated June 10, 2015.

Tiapride, which was found in the blood of Princess Diana's driver Henri Paul, is listed in medical literature as a treatment for stuttering in youngsters, Tourette's disorder, and for physical "tics." But a CNN report also said that tiapride is used "to relieve the symptoms of alcohol withdrawal." Indeed, the drug has been studied as a pharmacological treatment in the prevention of relapse in recently detoxified alcoholics.

Again, we do not know why Paul had been prescribed tiapride, but the report said that he had "therapeutic levels" of Prozac in his blood, but the level of tiapride was "sub-therapeutic." Since most of these types of medications linger in the blood stream for several days after the patient stops taking them, Paul apparently had previously taken tiapride, but had stopped taking it, since the level was no longer "therapeutic."

This brings up some very interesting questions, to say the least.

Could it be that Henri Paul had been undergoing treatment for alcohol abuse? Was he drinking heavily because of his depression and his doctor prescribed Prozac for the depression and Tiapride for the alcohol withdrawal? Did he go through detox? Treatment?

Could this be why his family was so adamant that the first blood tests were wrong -- because they knew that he was undergoing treatment for his alcohol abuse?

Did Paul "fall off the wagon," stop taking his Tiapride, but kept taking his Prozac? Could this be why he appeared to be sober at the Ritz that night after being called back from home to the hotel to drive -- because he was desperately trying to cover up his drinking?

Somebody knows the answers to these questions. If Paul had a drinking problem, you can bet that everyone around him, including his parents and employers, knew about it. Could this be why everyone in the Fayed camp and in Paul's family is rushing to his defense -- because the blood tests confirmed their worse fears? He was drinking again and lying about it?

As the prosecution investigation continues, I imagine that Paul's medical records will be examined very carefully. Somebody prescribed those drugs for him and did so for a reason.

The truth may come out yet, in spite of the denials.

Part One: Prozac, Alcohol and Denial?