two; in fact, these killings are often last for no more than 2 hours. For example and according to cnn.com, Adam Lanza, age 20, shot his mother just 13 minutes prior to breaking into Sandy Hook Elementary and killing 26 people before taking his own life. This entire series of murder lasted only five minutes. Serial killers often like to space out their murders for they tend to do research on their victim before committing the murder. For example, Richard Ramirez was found guilty of killing 13 people