Detective tracks serial killer through city, following him through dark alleys and noticing high-quality clothing

The detective was on the trail of a notorious serial killer who had been preying on young women in the city. She had been following him for weeks, but he always seemed to be one step ahead of her. However, tonight she was determined to catch him and bring him to justice. As she followed him through the dark alleys, she noticed something strange about his clothing - it looked like it was made from high-quality materials and fit his body perfectly. Suddenly, he turned around and caught her staring at him. "What are you looking at?" he asked with a smirk on his face. She quickly realized that he must have been aware of her presence all along and had been toying with her this whole time! But before she could react, he lunged towards her with a knife in hand...