A Day at the Beach (1970) is the very definition of an unknown lost masterpiece. The screenplay was written by Roman Polanski, and contained a brief cameo appearance by Peter Sellers. Bernie, who is an extremely articulate and perceptive but self-destructive alcoholic, is looking after his young niece Winnie, who is in constant pain due to her leg. Essentially, the film is set over the course of one day at a seaside resort, and we witness the self-destructive behaviour of the uncle by means of alcohol. What makes the set of circumstances even more horrific is that the poor little niece is witnessing this behaviour, and will truly be scarred by the destruction of her beloved uncle. The subject matter is extremely unpleasant that it subsequently never attracted a mass audience. A poster that would convey a form of melancholy, the atmosphere of the film is relentlessly bleak, dark, foreboding, and ultimately very tragic. The performance of the little girl is brilliant, and also is the performance of the uncle. While ultimately very grim, it does capture the horrors of addiction and alcoholism better than most.