Light Sleeper (1992)

"He was a good man in a deadly business. She was his only way out."

John LeTour is a recovering drug user who suffers insomnia and still deals to a high-end New York clientele, even though he’s trying to move on from the business. John’s professional midlife crisis becomes something more acute — and dangerous — when he re-encounters an old flame while a string of seemingly drug-related murders rocks the city.