While giving a lecture a female medium senses the presence of a murderer in the room that is transmitting murderous thoughts to her. Pretty soon after, she is brutally murdered by an unknown assassin under the watchful eye of Mark, a professional piano player. Mark then takes it upon himself to get to the bottom of the murder, and along with a nosey female journalist, he conducts his own investigation. However, things are never that simple and aside from trying to solve the murder, he begins to find many of his investigations cut off by new murders.

The director, Dario Argento, is definitely a master at his craft and he can truly orchestrate something unique on screen. The reason this film succeeds is because Argento steadily builds up the story, and does not bombard the viewer all at once with horrifying scenes. He takes his time building the suspense and tension, and you are sucked into the twisted story. Deep Red is a strange film, which can be contributed to the soundtrack that does not seem to fit the scenes, but its uniqueness is what sets it apart from the other horror films. Argento combines slasher and detective elements into this film, and it adds a different feel to the overall film. The creative and creepy murder sequences make this film a true classic of the Horror genre.