With memorable and unsettling opening credits, 'Armchair Thriller' became a massive hit for Thames Television in the late 1970s and early 1980s. With its trademark ghoulish cliff hangers and iconic theme tune (by Roxy Music's Andy Mackay), this haunting anthology series was an immediate success, its eerie, disturbing tales regularly attracting over 15 million viewers. For many, this series remains a high-watermark of dramatic television and its many frightening and spooky moments are remembered by viewers nearly thirty years after its original transmission. In this episode, a man hears a tape recording of two men apparently plotting to kill him. However, when he alerts the Police and the tape is played back, the voices are nowhere to be heard. As he tries to get to the bottom of the mystery and convince the Police of the plot, his growing sense of paranoia threatens to tip him over the edge.