Nurse Roger Dean said he loved the residents at the care home where he worked just outside Sydney, Australia... but loved the drugs he was addicted to more. Unfortunately, he strongly suspected that he had been caught on camera stealing them. What to do? Get rid of the evidence? But how? He set the place on fire and killed 10 people. Australia's top Crown prosecutor, Mark Tedeschi, reveals the evidence he took to court to win a conviction against Nurse Dean.