According to officials, Jim Duncan walked into the Lancaster Police Station on Oct. 20, 1972, and crossed the lobby in just a few steps. Without saying a word, authorities allege, he ripped the revolver from the holster on an unsuspecting officer's hip, stepped back, and shot himself in the head. But what sort of investigation was done after the fact? What sort of investigation could have been done — and should have been done? New episodes coming each Tuesday, through March 16. To continue supporting work like this, visit heraldonline.com/podcasts and consider a digital subscription.