My Boyfriend Is a Psychopath?

Sophia and Jasper are dating, but when she witnesses a serial killer with the same face as Jasper murdering someone, she calls the police, only to lose him. Suspecting Jasper, she meets the man again, barely escaping from his chase. Being certain, she reports him, but sees the Jasper at the police station is missing a scar on his face. What could be the truth about Jasper?