Toxicologist Dr. Marion Stowe has brought a deadly black mamba snake to London to study the properties of its deadly venom. It escapes and terrorizes the inhabitants of a townhouse, where an attempted kidnapping is in progress.

This is essential viewing for trash cinema fans.Having Reed and Kinski in the same room together is enough to warrant this films existence.Reed would be at the mercy of another poisonous snake in SPASMS.