I will add a feature of info, since season 3 started with Diamond moving to Los Angeles, and driving around in a convertible with a car phone, and the "lovely Sam'' as his answering service lady, never seeing her face. I shall expose her, "Sam'' was Mary Tyler Moore, for most of season 3, but actress Roxanne Brooks took over for the rest of the series, until it ended... hope I helped to solve the Sam mystery for you, as it is factual. Steve Winn reporting ha-ha