I found that this includes Carrying out crime to terrorize others, and Intent to carry out a crime just for the excitement.

(CNN) -- In the years leading up to the December 2012 massacre at Connecticut's Sandy Hook Elementary School, Adam Lanza went from a merely shy pre-teen to a mentally ill recluse obsessed with school shootings.

(CNN) -- For 19 years, the cold case of two slain prostitutes weighed heavily on the small military town of Oak Grove, Kentucky, especially after the brothel's madam publicly accused two allegedly corrupt police officers of the killings.

(CNN) -- The death of MI6 codebreaker Gareth Williams -- whose naked body was found inside an externally locked bag in his bathtub in 2010 -- was a "perfect crime," a confined spaces expert says. Peter Faulding said he disagreed with Scotland Yard's conclusion that Williams most likely locked himself in the bag, saying it was his belief that the MI6 worker was murdered.