Howard Gordon turns in a beautiful portrait of evil and madness intertwined in "Grotesque", where we see Mulder finally demonstrating the skills that made him a legend in the Bureau's Behavioral Sciences Unit even as he earned the nickname "Spooky". His foray into this heart of darkness reminds us that, until recently, society did not distinguish between madness and evil, and that even today we ignore the terrible price some must pay in tracking the monsters among us.
"If you want to catch a monster, you must become one yourself." Mulder remembers Patterson's lessons all too well, and in the next half hour descends through the circles of Hell, taking on the camouflage of his prey in an almost shamanic journey. He covers his walls with diabolical icons so he can see through the killer's eyes. He puts his hands where the killer's have been--on the murder weapon, on the concealing clay, on the walls and furniture of his home. He sleeps where the killer has slept, summoning into himself not only the spirit of the murderer's surroundings but the spirit of murder itself. Kim Manners poses him like one of the leering gargoyles in Mostow's studio, bathing Mulder in a cold and dispassionate light, as one who has ceased to look on his fellow humans as brothers but has joined the ranks of the predators. His one concession to sanity, the one lifeline Mulder leaves himself, is Dana Scully. He shuts her out deliberately, sparing her as much as possible the ugly trip into madness he must make, letting her rescue him as Patterson has tried to make Mulder rescue him from the descent into corruption.
Mulder sinks into the heart of madness almost without the use of dialogue. His defiant attitude toward Patterson shows us a disappointed Mulder, a man whose hero worship was cracked by confronting the reality of the man himself, who has never really learned how to deal with hostile authority figures. I loved the soft bewilderment in his voice as Mulder tells Scully, "But I didn't take it!", the subtle shifts during his conversations with Scully about Patterson, the sorrow on his face as he realizes he has shot his idol and guru. Best of all, the confrontation scene between Mulder and Patterson shows Mulder's fundamental ability to keep his head even in the eye of a nightmare, and find his way out of a maze that has brought low a man of more experience and expertise. Applause to David Duchovny for a very subtle performance.
Kurtwood Smith (aka Red Forman, dumbasses!) turns in a wonderful performance as the hard-nosed investigator who does not see the trap his prey has sprung on him. Poor pitiful Patterson, who realizes too late that Mulder is right, knowing in the deepest reaches of his soul, where he refuses to look, that the demon has moved in and taken over. Because Mulder is not afraid to look into the eye of the gargoyle, he survives: Patterson's refusal to admit the danger in his investigation makes him easy prey. The confrontation scene between Mulder and Patterson in the warehouse was stunning: Mulder finds compassion even in the midst of his anger ("I'm sorry!") and Patterson comes up short as his anger gives way to sudden realization ("Look at your hands. Now tell me what you're doing here."). How terrible to find yourself at last gazing on your own reflection--and recognize the demon looking out of your own eyes.
"Grotesque" could have turned out flat and cartoonish, but magnificent cinematic work add layers of meaning to a shaft of light, a shadow, a ripple of rainwater down a windowpane. Images like surrealist portraits play across the screen: Mulder's face superimposed on a gargoyle outside a window, the almost palpable darkness of Mostow's secret studio, the tortured features of a gallery of gargoyles contrasting with Mulder's closed, abstracted face. When Mulder and Scully pass back and forth before the projected images, the blood and bruises play across their faces, turning them both into living gargoyles for a moment.
The combination of all three talents in the service of one story is dynamite. The red herring of the agent's bitten hand, the subtle clue in the mutilation victim's reaction to seeing his attacker in his own hospital room, the barely-glimpsed demon mask of the attacking Patterson all added up to a tense and suspenseful hour. A well-done, exciting episode.