In this special edition main EM Cases podcast episode we feature the highlights from live podcasts recorded at Calgary EM during their annual Hodsman Lecture Day, covering a variety of current EM topics: The challenges of posterior circulation stroke (PCIS); Emergency Physician Lead to improve ED overcrowding, access block and job satisfaction; When not to order a troponin - The HEAR Score; Ketamine to relieve suicidal ideation and reduce acute risk; Peer Support Workers for ED patients with mental health issues and substance use disorder, plus a description of the Pathway to Peers program...