Final Embrace (1991)

Candy Vale has it all. Hip and sexy she rules the MTV crowd with her voluptuous voice and her beautiful body until one morning, when the police discover her brutally beaten corpse...Enter Laurel, Candy's younger sister, who is determined to uncover the mystery of her sister's death. She teams with Kyle, a hotblooded young cop. What the two discover is a world where music and murder dance hand in hand and best friends can quickly turn into deadly enemies.