Former bikie boss Jay Malkoun spent a decade in notorious Pentridge Prison for trafficking heroin, searched for lost treasure hidden deep in the ocean and survived attempted assassination. Malkoun gives Gary Jubelin a raw and brutally honest insight into the underworld - a world that’s often kept in the dark.   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.