Sandra Casey is a character in Friday the 13th Part VII: The New Blood. She was played by Heidi Kozak.
She was the girlfriend of Russell Bowen, whose uncle owned the house that the birthday party was held in. She goes out for a walk early in the night with her boyfriend Russell and she goes skinny dipping in the lake. She tries to entice him into joining her and dives under water. Jason Voorhees kills Russell by axing him in the face and when she resurfaces she sees his body and screams. Jason goes into the water after her and pulls her under, drowning her.