The Mummy comes from that first flush of Hammer studio's late 1950s horror success that also included Dracula and Frankenstein. It has many of the classic elements, such as the stars, the director, the writer, luscious cinematography, rich dramatic score. It has also has some of the problematic elements, that nowadays are fascinating to examine.
The story starts in the 1890s with a team of British archaeologists in Egypt, led by John Banning (Peter Cushing) and his father Stephen (Felix Aylmer). They uncover the sealed tomb of one Princess Ananka, but Stephen inadvertently brings the mummified body of her High Priest Kharis (Christopher Lee) back to life. Years later, back in England, Mehemet Bey (George Pastell), a modern-day worshipper of Ananka unleashes the undead Kharis to take gruesome revenge on the them.
Cushing's role is different to that Frankenstein or Van Helsing. Those are more authoritative people, they have answers, they drive the story. Banning has no knowledge of, or part in the creation of the mummy. He is learning as he goes, which does give the character a chance to develop.
Even covered head to toe in layers of muddy bandages, Lee is still recognisable, through his eyes and stature. His mummy is a relentless killing machine, immune to bullets and knives, a precursor to the Terminator.
Some elements do look dated. In an accurate depiction of the time the film is set in, archaeology is shown as going to a faraway country to loot artifacts and interpret them through the prism of the colonial English.
None of the Egyptian characters are played by Egyptians. Pastell (who is Cypriot born) is suitably slimy as Bey. He says his magic spells in a mix of gibberish and English. With brown skin and a permanent bright red fez, he sticks out and is easy to spot as the bad guy.
There is mileage in the symbolism of the story. At the heart of it is pesky foreigners and their backwards superstitions. By coming "over here" they can be seen as foreign agents invading the country. However, the English characters are all brought down by their arrogance, and English exceptionalism.