Robert Wagner (Jonathan Hart) and Sir John Standing (Dickie Longstreet) appeared in To Catch a King (1984), Lime Street (1985), and Windmills of the Gods (1988).
This is my boss, Jonathan Hart - a self-made millionaire. He's quite a guy. This is Mrs. H. She's gorgeous. She's one lady who knows how to take care of herself. By the way, my name is Max. I take care of *both* of them, which ain't easy; 'cause ...
Max's opening narration differs in some episodes. Most episodes have him finish by declaring "When they met, it was murder!" but some episodes have him saying "Their hobby is ... murder!"