Dr. Michael Hunter investigates the circumstances behind "The Crocodile Hunter" Steve Irwin's untimely death on September 4, 2006. Steve was an internationally-known Australian zookeeper, television personality, wildlife expert, environmentalist and conservationist.

Dr. Hunter investigates the death of Leonard Nimoy, who was an American actor best known for his role of Spock in the Star Trek franchise, from a 1964 TV pilot to his final 2013 motion picture.