Strange, that so many players seem to have problems in
Midnight Castle
.... ?!? :o

:-?
When it was released I played it once, got through rather quickly, without real problems, but ending only with something like 84 % secrets or so, and apparently not all money collected.
I replayed it yesterday, with about the same result...... and I now know that the reason for that is mainly one
secret portion
that I missed both times.
But I never got stuck somewhere, or missed one or more keys or anything like that.
I think it's a nice mansion, except for a few smaller issues (like
un-terminated
vines etc.) and a few cheap deaths.