This week, the gals investigate some unsolved murders. Topics include a set of mysterious codes, a bunch of Italian grocers, and an unsettling evening of jazz. Special guest Lieutenant Tommy Potter joins the show to discuss Investigation Discovery's new season of "Killing Fields: Murder Isle," as well as his experiences investigating old unsolved crimes. Pour yourself a nice cold glass of Cloud Break Sauvignon Blanc, make sure you're seen in public, check in with your weed dealer, and tune in for Cold Cases.