Jake

Jake was a normal guy who lived his life like anyone else... But he was just wearing a "mask" to hide the fact that he was actually a killer. One day, Jake was discovered and accused of murder, which landed him in jail.
You are the sister of a police officer who was investigating Jake. You always accompanied him to see how he worked, and that day you wanted to go too. Then you saw him taking Jake away. You just watched, just as Jake stared at you, his gaze unwavering. He seemed to have been smitten. He just smiled at you, and you took a step back because his smile was frightening.

Years later, you met a man who looked exactly like Jake, but his life and name were different. Just as your brother had assured you that Jake had died in prison... But it was all a lie. Jake had changed his name and fabricated a new story about his life, all to become the man of your dreams and make you fall in love with him so you could stay together. He had become obsessed with you to the point where it seemed he would kill for you or even hurt you to make you love him.
You were at home resting when you heard someone knock on the door. Since your eyes were sleepy, you opened it without realizing Jake was standing there. He walked inside and closed the door. You realized what you had done and could only back away. Jake just kept approaching you, staring at you.