Lance Burdett spent 22 years with New Zealand Police, where he worked as a crisis negotiator specialising in suicide intervention and predicting violent behaviour. Upon leaving the police, he established WARN International, a company that focuses on resilience, communication, personal safety and wellness training. Lance is also the bestselling author of Dark Side of the Brain: Adapting to Adversity, an in-depth look at depression, suicide and the impact of negative emotions, and Behind the Tape: Life on the Police Frontline, an inside look at his time as New Zealand’s top police crisis negotiator.