In the gripping Murder off Key episode of Suspense, a man finds himself increasingly tormented by the relentless and atrocious singing of his neighbor, a middle-aged woman named Violet. Living in a cramped apartment, he first encounters her voice late one night, when the stillness of the evening amplifies her off-key scales, which seem to claw at his sanity. As he sits on his balcony, he cannot escape the cacophony that invades his peace, and it becomes an obsession that gnaws at his mind. The man, whose name is Carlson, is soon drawn into a conversation with another resident who shares his disdain for Violet's singing, revealing that she performs nightly, much to the dismay of those around her.