Which drug is he taking?

[Darksanity]

Hi all,

I will tell you are real story that I just learned.

I feel like Sherlock Holmes right now and absolutely need to know what drug (or drugs) are in case.

I will call my girlfriend's father Bob and her mother, the wife (well not anymore...) of Bob, Kate.

Last week, Kate found out that she had 20 000 Canadian Dollars of dept wich she never knew she had. Bob borrowed (and spent) all this money and was hiding it from her for a long time... he said it was for "groceries and stuff like that" (bullshit!)... Bob tried to suicide once by taking tens of Tylenol Extra-Strenght (500mg Ancetaminophen) tablets. He has an history of alcohol abuse and alcoholism. He has a very weird behaviour wich he tries to hide the best he can but sometimes gets caught doing very immoral things (wich I wont state here). Kate think he started abusing alcohol again but she's not sure since there's no trace of beer and alcoholic bottles and he has no alcohol breath smell. He hides something in his truck wich he's the only one to have the keys and frequently go in and out of it. He is very nervous and emotionally unstable and suffer oocasional insomnia. His best friend sells Cocaine...

I just heard that story and since I have a huge drugs/psychoactives knowledge and experience it's almost sure he's addicted to a drug. The question is : what drug? I was thinking between : Cocaine, Methamphetamine, Heroin, Dilaudid (Hydromorphone), Oxycodone or Hydrocodone. The 20 000 dollars is probably spent into drugs and immediatly I thought of Cocaine (best friend is seller, huge amount of money). But he doesn't seem to have a stuffed nose and does not look like he has snorted something. Methamphetamine pills taken orally would pretty much suit then. But sometimes he seems so relaxed and just enjoys TV with a smile on his face looking kind of drunk wich definatly makes me think of an Opiate. Probably one of those listed above. My final hypothesis is, he had been abusing all of them depeding the situation.

What do you all think of my hypothesis? Any other hypothesis? Is there a way we could find out?