Robert Durst has once again made headlines when Susan Berman – his long-time best friend and a possible witness to his wife’s disappearance – is found murdered in LA. This episode focuses on Susan's past as the daughter of a notorious Las Vegas gangster, in order to determine if she might have known crucial information about what happened to Kathie. Bob discovers why it's not a good idea to interfere with Kathie's best friend Gilberte.