He’s been described as Australia’s John Wayne Gacy, an opportunist killer, with unspeakable obsessions. Is this Australia’s worst child killer? We go inside the mind of Derek Percy and we ask the question, was he insane or evil? Derek Percy was deemed too dangerous to be housed in a secure psychiatric facility, so he became the longest serving prison inmate in Australia’s history. **This film is under non-exclusive license from The Full Box. All rights reserved. We ask you to please contact us if you believe there are any copyright issues via you_tube@valleyarm.com** We're currently posting some fantastic old school Australian Crime Content - Check out Forensic Investigators here: https://bit.ly/43ct9fQ Some Aussie Crime Documentaries to fall asleep to: https://bit.ly/3C2ZnhE ______________________________________________________ Welcome to the Crime Family! Subscribe to get more Australian Crime content and hit the notification bell to see freshly uploaded content: https://bit.ly/AusCrimeYT Let us know what you think of this case in the comments below! #AustralianCrime #truecrime #Documentary #crimestories #australia #murdermystery #truecrimecommunity #johnwaynegacy #johnwayne #killerclown