'Six Pistols to Hunt Professor Z') is a 1966 Eurospy film directed by Julio Coll and starring António Vilar, Letícia Román and Peter van Eyck.

The film's action takes place around Lisbon, and concerns attempts by various secret agents to steal a formula.

In Lisbon, Professor Zandor developed a groundbreaking formula on behalf of the industrialist Bardot: He succeeded in producing a steel mixture that is completely bulletproof and, as a result, makes conventional weapons ineffective.

One day, the brilliant scientist is kidnapped straight from his laboratory, and those present, Ellen Green, Zandor's assistant, and Mr. Bardot himself, are witnesses.

The most important nations then send their best people to the Portuguese capital, including Jack Haskins from the US and Pierre Genet from France.

The events have led to the fact that now Lisbon is not only a fairground for spies, but also various dark figures arrive on site, including a certain Johannsson, the head of a gang, as well as the opaque Jenny Renoir and the unscrupulous killer Peterson.

Local Commissioner Oliveira has his hands full to ensure that his Lisbon does not turn into a battlefield anytime soon.