Apparently, George Romero would like to re-make this film. I hope he doesn't. Although it could be said to be somewhat "of its time", it explores themes of domestic abuse, mental illness and spiritual exploration (and exploitation) that are absolutely relevant to today.
The film was originally released as "Jack's Wife", and the title gives some idea of the estrangement and lack of identity that our heroine, Joan, begins to feel as a result of being controlled and misunderstood by her husband. This is portrayed beautifully in the opening dream sequence that could only have been shot in an era of psychedelic experimentation. Of course, her attempts to liberate herself through unorthodox channels have unexpected results.
There are moments when the tension between Romero's exploration of female exploitation and the film's voyeuristic nature may seem difficult to resolve. And yet it is this complex, difficult and somewhat seedy dynamic that makes the film unique. Romero tries, as with "Night of the Living Dead", to shock and exploit, as well as to educate and provoke. And, at this point in time, he did it with amazing skill.
Don't watch this if you're expecting zombies and thrills n spills... But if you're a lover of films of this period, and want to watch something genuinely different then this is one for you.