In a street shot after the cemetery, the McMillans and Sgt. Enright are traveling in a Ford, but when they arrive at the McMillan's building they are in a Plymouth.
When Sally is leaving for the warehouse towards the end of the episode, she speaks to Ferguson as she gets into her car. He opens the door to get in his own car, the camera angle changes and he opens the car door a second time.
In one of the scenes by the warehouse where the barrels are stored, supposedly on the San Francisco waterfront, a sign is partially visible in the background that reads "Port of Lo" (clearly "Port of Los Angeles").