有時，人們殺人或者宣稱為某起謀殺負責，只是為了出名。本片講述了一個卡車司機的真實犯罪故事，這個司機在工作期間橫跨全美，殺害了不計其數的女子，並每次都在現場留下一張便條，畫著一張潦草的笑臉，作為其罪行的象徵。
Sometimes, people kill or claim credit for murder because they want to be famous. Happy Face Killer is the grisly true-crime story of a truck driver who, during his work, travels across the country, kills numerous women and leaves a confession note with a scrawled happy face as cryptic evidence of his crime.
