Double Vision (1992)

Caroline, a sensuous medical student travels to London to investigate the mysterious demise of her identical twin, Lisa. Lisa, an aspiring model lives in London as a high-class call girl and suddenly goes missing. A dead ringer for her sister, Caroline's quest becomes dangerous when she assumes Lisa's identity and begins to live her lifestyle. Now from the posh boardrooms and bedrooms of the European elite, to the decadent world of London after dark, Caroline's every step draws her deeper into this seductive double life - and brings her closer to a killer determined to finish the job once and for good.