This time David plays nurse to a New Orleans doctor who is competing with a voodoo con man for the neighborhood health care.
Heroes fighting to save superstitious folks from voodoo con men was a common enough plot line at the time, but I found this example to be offensively condescending. For starters, Babalao doesn't have any special tricks to get people to believe in his power, just some cheap props and a husky voice. Though some of his patients are cured psychosomatically, the overall message seems to be that voodoo followers are such gullible hicks that they'll believe anyone who claims to be a powerful voodoo priest just because they say so.
Second, David's pretty doctor boss does the voodoo act herself, because if she didn't, people wouldn't believe that she could cure them. Admittedly I know very little about the voodoo religion, but as a rule, believing in a religion doesn't mean disbelieving the effectiveness of scientific methods. The way David and the doc talk to their patients ("The doctor wanted you to have this, uh, mojo") is positively insulting.
This is not to say that this episode isn't entertaining. There's a great funny scene with McGee, and lots of unintentional humor too. Example: Babalao, after making a very cryptic statement about how he intends to take care of David and the doc, lets loose with a cheesy villainous belly laugh, while his partner blandly remarks, "If you say so." But it's all very b-movie in form and content, in a series which typically strives to be much more. And the essential plot has been done elsewhere without blatantly insulting voodoo followers.