Some of the weapons...Poison, Canon & the Knife (which was used by Ms. Peacock in the Billiard Room to murder Mr. Body) and empty suspect seats.
Professor Plum studying up for a lesson in Archeology for the correspondence school where he teaches.
[Next] International Detectives from Scotland Yard? International visitors from 2nd Witham Boys' Brigade near London.
Lobby Crime Scene where Mr. Body's body was found.
Brigaders interviewing a suspect to gather clues!