In Devil’s Advocate, a financially struggling young couple from Florida accept a career offer that seems too good to be true, and if it didn’t prove to be deadly in disguise, there wouldn’t have been much of a movie. However, unlike some other legal thrillers which deal with strictly worldly evil, such as crime itself as dealt with by the legal system, and corruption within and between big law firms, there is a supernatural dimension in this one. John Milton, the key man behind the lucrative job offer in New York which Lomax accepts, is a satanic figure who who hints at universal moral corruption, tempts others into behavior against conventional morals, and hires lawyers for his law firm who can and do successfully legally defend serious wrongdoers. (Right before Lomax receives the offer, he mounts a successful defense of a public school teacher who is accused of inappropriate sexual touching of an underage female student, but who by certain actions, gives him a strong suspicion that he may indeed be guilty.)
When Lomax’s mother, having previously warned him that NYC is a den of sin, failed to talk him out of taking the lucrative law firm job offered to him by a major firm based in NYC, comes to visit him, and then says she wants to return to flyover country because she misses her church, he tells her that there are 20,000 churches in New York. “Take your pick”, he says. However, her church back home, though superficial in its worship with vigorous singing and testifying, is in an austere square white building with aesthetics informed by Calvinism.
The Churches of New York shown in the movie are more “high church” and formal, but in one case, empty and cavernous, the interior space of “the Church of the Holy Hope” with masonry arches overhead, perhaps alienating by design.
The Devil, as perfectly played by Al Pacino, “spends a lot of time in the air” (on international legal cases); leaving second-in-command Eddie Barzun in charge of many of the day-to-day and support activities of the firm; yet though Barzun is easily led into sins involving greed and lust not uncommon to a man of his class (his past includes “ex-wives” and “a pregnant receptionist”), when he through no direct fault of his own becomes a hindrance to the continued international legal operations of the firm, many of them conspicuously evil, (pressure from a federal-level investigative body called the “Weaver Commission” is hinted at) he is killed by supernatural means: the ‘homeless crazies’ who assault him for his valuables in Central Park are seen to have pursued him while they themselves had become invisible, having been somehow mysteriously set upon him by Milton.
However, before the Big Reveal, there are a myriad of more direct clues that John Milton might not be just an ordinary human being being bad; for instance, he attends Barzun’s funeral, held in an old-style Catholic Church with a lovely traditional-style interior (the Stations of the Cross on the walls are a dead Catholic giveaway); when he puts his finger in the holy water, it is seen to visibly bubble and seem to boil.
(This could be seen as the water’s attempt to flee from the evil, because holy water is blessed water mixed with exorcised salt, which prevents the water from being used for evil. That said, many accounts of exorcism and possession contain claims that contact with holy water seems to physically hurt or repulse the possessing demons.)
It is after the funeral of colleague Eddie Barzun at this rare and beautiful house of worship (alas, such well-adorned Catholic Churches of the previous century are only becoming more endangered) that Lomax is approached by a government investigator who reveals to him that the law firm at which he and Barzun worked was not merely a large law firm, but had a logistical or financial interest in a number of international enterprises notable for conspicuous evil.
While “John Milton’s” ability to be conversant in several languages might not be a sign of supernatural giftedness or superiority over the average human, the fact that he could tell a Hispanic man who threatened him with a boxcutter while on the subway things he could only know about his woman through supernatural means, hint at demonic possession, at the very least.