Nick Kaldas, former NSW Police deputy commissioner, spent his career working undercover infiltrating gangs and solving murders. He was also chosen by the United Nations to head up the investigation into the assassination of a former prime minister. Nick joins Gary Jubelin to share the highs and lows of his career. Discover more about Nick Kaldas' book, Behind The Badge, here.   Can’t get enough of I Catch Killers? Stay up to date on all the latest crime news at The Daily Telegraph. Get episodes of I Catch Killers a week early and ad-free, as well as bonus content, by subscribing to Crime X+ today. Like the show? Get more at icatchkillers.com.au Advertising enquiries: newspodcastssold@news.com.au  Questions for Gary: icatchkillers@news.com.au  Get in touch with the show by joining our Facebook group, and visiting us on Instagram or Tiktok.  See omnystudio.com/listener for privacy information.