-1Colonel Mustard with the Revolver in the Billiard Room

We know from the start that Mr. Green had the Rope, Colonel Mustard had the Revolver, and Mrs. Peacock had the Candlestick. That leaves three weapons unaccounted for.

The first guest that went to search for Mr. Boddy had the Lead Pipe and searched the hall. This guest can be identified as Professor Plum as he forgot what he was doing there. While searching the hall, Professor Plum was attacked a guest with the Wrench. The guest with the Wrench was Mrs. White as she was identified by name by the guest who attacked her.

She was attacked by the guest who had the Rope, Mr. Green. At this point, the Hall and Lounge has been searched. Mr. Green entered the Dining Room where he was approached a guest with the Knife. This guest was Ms. Scarlet as we know at this point who had the other weapons. Mr. Green and Ms. Scarlet decided to search together.

Mrs. Peacock had the Candlestick, so the guest in the Ballroom was obviously Colonel Mustard. Since Mr. Boddy was discovered in an room not searched yet starting with the letter B, this leaves only the Billiard Room.

Colonel Mustard found Mr. Boddy in the Billiard Room Mr. Boddy met a bullet. Colonel Mustard grabbed the combination to the safe.

Unfortunately, what Mr. Boddy didn’t tell his guests was that he didn’t have the actual money in the safe. Rather, it was merely an IOU for Mr. Boddy and that his friend was the banker he was waiting for so Mr. Boddy could transfer the money to his accounts. Instead of claiming the money for himself, Colonel Mustard only had a worthless piece of paper.

Fortunately, Mr. Boddy had merely fainted before Colonel Mustard fired the gun.