Could two cold cases in Iowa be linked? That’s the question of the latest episode of ‘48 Hours.’ Michelle Martinko was a high school senior who police say was stabbed to death in her car in the parking lot of a mall in Cedar Rapids in 1979. The show probes something that was said during the investigation by the man convicted of her killing. Police say he mentioned the 1995 disappearance of Mason City news anchor Jodi Huisentruit. Inside Edition Digital’s Mara Montalbano has more.