Masked Strangler

What drives a man to want to take someone's life?

What have been the motives of famous serial killers in the past? Perversion, evil, a mental disease, or maybe they just like to kill for the sake of killing...this is what Johnathan, a young Police Investigation student is trying to unveil, he reviews past serial killers whose victims were mostly young teens and men, but he can't concentrate as there have been several murders in his town with the same modus operandi and he has a very good lead on who the killer might be...