It has been exactly a year since Princess Diana, Dodi Fayed, and their driver, Henri Paul, were killed in a horrific car crash in a Paris tunnel. But there are still many unanswered questions about the circumstances surrounding the accident. Monday night, CBS.com, in conjunction with CBS News 48 Hours, took a look at some of the issues. Among the people interviewed: Kes Wingfield, one of the two bodyguards protecting Princess Diana and Dodi Fayed the night of the crash. He tells 48 Hours that he testified to French authorities that two bodyguards were not enough that evening. On the morning of August 30th, Wingfield said he called Mohammed Al Fayed's security headquarters in London requesting more bodyguards, but the request was denied. Rene Delorm, butler and longtime confidant of Dodi Fayed. Speaking for the first time on American television, Delorm says that around the time of the accident, Dodi was becoming increasingly angry at the intrusions of the paparazzi. Did Dodi order his driver, Henri Paul, to speed up to escape the paparazzi the night of the crash? Delorm thinks not, saying that Dodi wanted only to protect Diana.