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.
Aten
Akhenaten was considered the "high priest" or even a prophet of Aten, being the main propagator of the religion in Egypt during his reign. After the death of Akhenaten, his son, Tutankhamun, reinstated the cult of Amun and the ban on religions in competition with Atenism was lifted. The point of this transition can be seen in the name change of Tutankhaten into Tutankhamun indicating the loss of favor in the worship of Aten. With the death of Akhenaten, the city of Amarna was abandoned, along with the worship of Aten. There is evidence that the people under Akhetaten's rule did not directly worship Aten, but "Worshiped the king and queen worshiping the disc" The cult of Aten was still in Egypt for another ten years or so as it faded and there was no purge of the cult after Akhenaten's death. When Tutankhamun came into power, his religious reign was one of tolerance, the only difference was that Aten was no longer the only god. Tutankhamun rebuilt the temples that were destroyed during Akhenaten's reign and he reinstated the old pantheon of gods. This return to the gods that were before Aten was "a move based publicly on the doctrine that Egypt's woes stemmed directly from its ignoring the gods, and in turn the gods' abandonment of Egypt:.