Okay guys, I've got another horror novel for us to find. Reader Tim sent me a note earlier today: In 1980 or 1981 I read a paperback which I bought at a supermarket or drugstore. I think the book was published by Zebra or Leisure or another that I would have thought of as a cheapo publisher. What I remember about the book is that it was about a kid who was made to live in a creepy boarding school/orphanage. I also seem to remember a ride in a limousine with a sinister chauffeur. Other than that, all I remember is how spooky the book's atmosphere and setting were.
This reminds me of a couple books I haven't read in decades: Robert Marasco's Burnt Offerings and Peter Straub's Shadowland. However I really don't think they're quite it. So - thoughts anybody?
Update 5/14: Found!