In David Fincher's Se7en, what are the surnames of the two detectives?

The two detectives in David Fincher's Se7en are Detective David Mills and Detective William Somerset, so their surnames are Mills and Somerset. Brad Pitt plays Mills, a comparatively young detective who has recently transferred to the unnamed city, while Morgan Freeman plays Somerset, a veteran investigator nearing retirement.

The pair are assigned to a series of murders arranged around the seven deadly sins: gluttony, greed, sloth, lust, pride, envy, and wrath. Their contrasting personalities drive the film. Mills is impulsive and emotionally involved, whereas Somerset is methodical, experienced, and deeply pessimistic about the city's violence.

The film's title is stylized as Se7en, combining the word “Se” with the numeral 7. It was released in 1995 and became Fincher's breakthrough feature after his difficult debut on Alien 3.

Viewers sometimes remember the detectives by their first names, David and William, or confuse Somerset with a place name. Somerset is the surname of Freeman's character; Mills is Pitt's surname.