If has a flaw, it is that the film's pacing can be glacial at times, and some viewers may find the more experimental sequences challenging to engage with. However, for those willing to immerse themselves in Metzger's world, Black Taboo offers a rich and rewarding viewing experience.

One of the most striking aspects of is its exploration of the societal taboos surrounding sex, relationships, and power. The film critiques the repressive attitudes of the time, particularly with regards to women's desires and agency. Through its portrayal of Joan's journey, Black Taboo poses difficult questions about consent, control, and the performance of identity.

The story revolves around Mark (played by George Cumson) and Joan (played by Maria Lease) Ellis, a married couple whose seemingly perfect facade hides a multitude of secrets and desires. As their relationship begins to unravel, they engage in a series of intense and often disturbing encounters with other individuals, pushing the boundaries of conventional morality and exploring the limits of their own desires.