Deep Red (1994)

In a futuristic society, a disillusioned police detective and a brilliant scientist, who is haunted by her dark past, form an unlikely alliance to investigate a string of murders. The victims are killed using nanobots, groundbreaking technology that grants immortality and eternal youth. As they dig deeper, they discover a conspiracy involving a mad scientist, corrupt officials, and a dangerous shapeshifter. With their lives in danger, the detective and scientist must overcome their differences and fight to expose the truth before it's too late.