Bleak. Unrelenting. Profane. These words (and many others) describe "Nil By Mouth," which marks the directorial debut of actor Gary Oldman.

This dark drama is not an easy film to watch. The violence that is depicted, both verbal and physical, is overwhelming and almost suffocating. And its extensive use of four-letter words and vulgar phrases would nearly justify an NC-17 rating, if it's possible for a film to receive one on that basis.

Based loosely on events from Oldman's formative years, when he lived in an abusive household, "Nil By Mouth" examines the relationship between Raymond (Ray Winstone), a chronic alcoholic prone to violent fits of anger, and his long-suffering wife, Valerie (Kathy Burke), who often bears the brunt of his outbursts.

As a director, Oldman has an eye for unflattering but realistic staging. However, as a storyteller he needs to learn to pace scenes better. Also, the somewhat optimistic ending seems like a copout.

Of course, the whole thing would topple without Winstone and Burke's superb performances, as well as Eric Clapton's somber score.

"Nil By Mouth" is rated R for profanity, violent fistfights, simulated drug use, vulgar slang and references, nudity and racial epithets.