Mickey O’Rourke portrays "Harry Angel," a New York private investigator scraping by when he takes on a job locating a musician called "Johnny Favorite." This individual seems determined to avoid being found, and as the search continues, the PI starts to suspect that his employer, “Louis Cyphre” (played by Robert De Niro in a role reminiscent of Rasputin), has ulterior motives. The investigation becomes increasingly complex, leading "Angel" to face closed doors and even more troubling experiences as he’s drawn into a world of voodoo in New Orleans—a place that doesn't exactly roll out the welcome mat. Bodies begin to accumulate, and “Angel” starts to feel uneasy about his situation. Will he be able to find his target? And perhaps more importantly, will he uncover why "Cyphre" hired him for this task? The film is one of those mysteries where the pursuit itself isn't necessarily the most exciting element. "Angel" has a way of making everyone around him seem frozen—including Charlotte Rampling’s enigmatic character, “Margaret”—but what does that signify? Alan Parker remains largely true to the Hjortsberg story, letting the audience slowly realize that things aren't as they appear, that "Angel" is being used, and that his situation likely won't have a happy ending. O'Rourke delivers a strong performance, bringing a darkness and toughness to a character who isn’t quite as tough as he wants to seem. De Niro, despite limited screen time, also conveys an unsettling sense of menace as the truth begins to dawn on viewers. The beginning is somewhat slow-paced, but it develops into a powerful conclusion that stands out within its genre.

Source on TMDB