Cocaine: One Man's Seduction « Movie from 1983

In a frightening portrait, Dennis Weaver plays the man-next-door who gets trapped in the insidious web of cocaine addiction.

First it was an easy boost for Eddie Gant, a 47-year-old real estate salesman in a market so competitive, his career is threatened by men half his age.

But it's a cruel illusion.

While hiding his use from even his wife, his dependency escalates, his bank account disappears, mood-swings treaten his job - and finally his body screams out.