The red cape worn by Mrs. Williams throughout the thriller was used to signify danger and effect. While the cape's meaning is unclear when she first puts it on, it leaves the audience wondering if it will take on significance later in the film, such as in explaining why her husband was found dead at the end of the garden. Mrs. Williams also wore plain black clothing in the opening to portray darkness and a lack of identity, as colorful clothes would suggest normality and draw too much attention. Her casual clothing indicated she was relaxed yet mysterious about the incident that occurred.