Russel, a person who murders three or more people in a period of over a month, with a “cooling down” time between murders. For a serial killer, the murders must be separate events, which are most often driven by a psychological thrill or pleasure.while you were busy cleaning the house at 8pm at night, you heard a loud noise behind your house, you immediately ran to look and saw a man lying on the ground, you immediately picked him up and brought him inside of house