On his way home from a party, James Fhelleps is involved a car crash that kills his daughter Heather, and leaves his wife Alice disfigured, paralyzed and catatonic. While James aimlessly wandersthe city, Alice is cared for by Barry, a coprophilicphysical therapist who sexually abuses her. One day, James gives a prostitute named Emmy Bruzze a lift to her house, where James experiences a psychotic break when Emmy tries to seduce him, resulting in him killing her. As James stares at Emmy's body in shock, it begins speaking to him in Heather's voice, begging for help and claiming that God is keeping her from him. James returns home, gets rid of all religious objects in the house, and holds a conversation with Alice, who he is convinced communicates with him telepathically. James believes he can somehow bring Heather back and "beat" God by killing street people, and those who associate with them. After murdering a perverted priest, James is held at gunpoint by Slick, a minion of "street king" Hell, but wounds his assailant, having one of his ears shot off in the struggle. A mob of homeless then attack James, forcing him to flee to his apartment, where he catches Barry having sex with Alice. James disfigures Barry and leaves, rigging the place so that it explodes when Slick breaks in, killing him and Alice. In a daze, James stumbles onto Hell and his lackey Marco harassing a prostitute and her daughter, and kills the two thugs, being shot in the process. The ambiguous ending of the film shows James getting out of bed, going into Heather's bedroom, and telling her to be quiet.
Film Bizarro wrote that Unspeakable showed promise, concluding "The movie wins points by being fairly ambitious. It's relatively well shot, has some varying effects that mostly look good, actors that seem to handle their characters rather well and no matter how bad the plot might be at times at least it works within the frames of the film". A two and a half out of five was awarded by Dread Central, which criticized the pace and uninteresting subplots, but wrote, "It's a commendable first effort though, limitations considered, and most certainly does the job of delivering an angry wallop straight to the gut".
