Be careful This is one of those shows which is only for the sort of person who takes great joy in watching a show where you can set your watch by the plot. If you loved Quincy, and went mad with joy when they repeated Dallas and the A-Team, then this is for you. Otherwise, it might be good for you to avoid this at all costs
Dick 'Yes, I can do a Cockney accent' Van Dyke plays a doctor (it's never actually made clear, at least in the episodes that I've watched, what he does whens he's a doctor). He seems to have been given his entire career off by a very caring boss who understands that its difficult to be a doctor and have a crime-fighting hobby at the same time.
Dick Van Dyke's moustache seems to play a separate character
The rest of the cast is basically constructed so that Dick can go about his caring-yet-stern crimefighting ways without it being too unbelievable. Mind you, with his 'son' in the program being the head of the LA homicide squad and his best friend being the county coroner, they really didn't put much effort into it
Like I said, if you like cheesy, over/underacted programs without much plotline, then this will be for you. Think of it as 'son of Quincy' and you'll have a pretty good idea
There's even an episode with Quincy in it, or so I'm told.......