I trying to remember the name of a clic Apple II game.?

I remember a clic Apple II game I played in grade school around 1982-1988. It is an adventure game where you are hiking up a hill through some fog in England and stumble upon a castle. There are a bunch of puzzles you have to slove. Some things I remember are a vat you can fall into and drown in the basement and a jester that asks riddles in one of the upper rooms. Anybody have any ideas what it is?