Shallow Grave (1987)

Four college friends unwittingly uncover a murder, thrusting them into a perilous game of cat and mouse with a relentless killer determined to eliminate any witnesses. As the tension escalates, the girls must navigate their fear and mistrust while trying to survive the lurking threat. With their lives hanging in the balance, they confront not only the external danger but also the strain it puts on their friendship. The chilling pursuit forces them to make desperate choices in a fight for their lives.