Step 1 : Introduction to the question "2. Morgan Freeman and Brad Pitt play two detectives on the trail of a serial killer whose murders relate to the seven deadly sins. Which 1995 thriller is this?"
...1. Wanted 2. Se7en 3. The Sum of all Fears 4. Seven Pounds After the killer John Doe (Kevin Spacey) escapes from Mills (Pitt) and Somerset (Freeman) he then surrenders to them with the blood of his two latest victims still on his hands. With two sins remaining (Envy and Wrath) he reveals he has killed Mills's wife to represent Envy. When he taunts Mills that his wife was pregnant (a fact Mills was unaware of) he acts out the final sin of Wrath by killing Doe. A different ending was crafted in which Doe does not kill Tracy Mills (Gwyneth Paltrow) and the studio preferred this version. Pitt and Freeman apparently refused to finish the film if the original ending was not used. Although the killer does not survive the movie, he has completed his aim of a death fashioned after each of the deadly sins.