FORENSICS: How toxicology helped Daniel Johns avoid prison

After being arrested for drink driving, how did a hair sample and forensic expertise help save Silverchair lead singer Daniel Johns from a prison sentence? Dr Michael Robertson has over 20 years of forensic expertise. One of his most common cases is drink driving, and even though it seems black and white - you're either over the limit or you're not, it's actually far more nuanced and complex. Join host Kathryn Fox as she unpacks Michael's work and the case involving Daniel Johns.  If this content affected you, the number for Lifeline is 13 11 14.See omnystudio.com/listener for privacy information.