In Pattern for Terror, we are introduced to Ted Stratton, who is at a party hosted by his fiancée, Norma. The atmosphere is initially vibrant, filled with music and laughter, as Larry Craig, a talented pianist, entertains the guests. However, beneath the surface, Ted is grappling with intense feelings of jealousy and inadequacy, particularly regarding Larry's close relationship with Norma. As the night progresses, Ted's emotions begin to spiral out of control, leading to a confrontation that will change everything.