Princess Diana was killed following a horrific car crash while on vacation in France with her paramour, Dodi Fayed, in August 1997. Dodi Fayed and driver Henri Paul were also killed in the crash, while bodyguard Trevor Rees-Jones survived the incident. So many theories and conspiracies arose from the incident that the Met Police formed a taskforce to investigate them all. Here are the top theories and a review of the evidence. Perhaps you will see something that others missed…

There are anywhere between 49 and 75 victims being attributed to one, or perhaps more, active serial killer in the Chicago area. Theories abound, but how has such a prolific killer (or killers) remained at large stalking human prey for so long, given our modern forensic methods of detection? Many experts predicted that we would never see the victim numbers that killers were able to reach in the 1970s and ‘80s due to advanced forensics, so how has the “Chicago Strangler”(as he’s known in the press) managed to elude capture? And who is killing the women of Chicago?

Anthony “Tony” Costa was tried and found guilty of murdering and dismembering four young women in the Cape Cod area of Massachusetts between 1966 and 1969. The bodies of young women seemed to turn up in whatever area Costa frequented. That much is known. What is not known is the full extent of his criminal career (he is suspected in at least eight other murders), along with his murderous motives, speculated to include necrophilia and cannibalism.