Fan Casting Without a Clue

Vince Clerone, an amateur investigator, is invited by the master of the place to a large isolated mansion at the other end of a vast wooded forest. He must blend in with the other guests, all suspicious for many things, in order to guess who could kill their host. However, when the murder occurs, Clerone is quite overwhelmed by the events, but fortunately the cleaning lady, who has a lot more scent than him, comes to his aid. Here is a Who Done It like no other...