Tutankhamun's mummy
Detective Michael R. King and FBI profiler Gregory M. Cooper came together with an actual Egyptologist to form their own theory which was that Tutankhamun was murdered. With the use of forensic evidence and their extensive backgrounds in criminology, they came to the conclusion that he was likely murdered by one of his closest advisors, Ay. Ay did succeed Tutankhamun on the throne, so they used that as the motivation for the murder.
Paleoradiology
A recent CT scan of Tutankhamun in 2006 was able to provide evidence against the 'homicide theory'. A depression fracture noted on the skull from X-rays taken 30 years previously was found to be a post-mortem injury rather than a cause of death. The hole in the head had been created in order to continue the embalming process of mummification. This CT investigation was also able to confirm Tutankhamun's age of death as nineteen and disprove the idea that the young pharaoh had suffered from scoliosis; rather the bend in his spine was from additional post-mortem damage to the body.