Board Game With Candlestick in Ballroom by Professor Plum: It's Clue / Cluedo

Clue (North America) / Cluedo (UK/Commonwealth) — the classic deduction game (1949, Anthony Pratt / Waddingtons / Parker Brothers).

Professor Plum, the candlestick, and the ballroom are all core components:

• 6 Suspects: Miss Scarlett, Colonel Mustard, Mrs. White, Mr. Green, Mrs. Peacock, Professor Plum.
• 6 Weapons: Candlestick, Dagger, Lead Pipe, Revolver, Rope, Wrench.
• 9 Rooms: Hall, Lounge, Dining Room, Kitchen, Ballroom, Conservatory, Billiard Room, Library, Study.

One of each is randomly selected as the solution. Players deduce the triplet by making suggestions and disproving with cards.