This is the log of what happened so far

Round 1

Scarlet (mip)
Enters Lounge
Suggests Mrs. Peacock with Knife in Lounge
Mustard (BBB) disproves

Mustard (BBB)
Enters Lounge
Suggests Professor Plum with Rope in Lounge
White (Wiz) can't disprove
Green (OG) can't disprove
Peacock (Dum) disproves

White (Wiz)
Enters Kitchen
Suggests Professor Plum with Revolver in Kitchen
Green (OG) disproves

Green (OG)
Enters Conservatory
Suggests Mr. Green with Lead Pipe in Conservatory
Peacock (Dum) can't disprove
Plum (Nob) disproves

Round 2

Scarlet (mip)
Enters Conservatory
Suggests Miss Scarlet with Knife in Conservatory
Mustard (BBB) can't disprove
White (Wiz) can't disprove
Green (OG) disproves

Mustard (BBB)
Enters Conservatory
Suggests Professor Plum with Lead Pipe in Conservatory
White (Wiz) can't disprove
Green (OG) can't disprove
Peacock (Dum) can't disprove
Plum (Nob) disproves

White (Wiz)
Enters Study
Suggests Mrs. White with Wrench in Study
Green (OG) can't disprove
Peacock (Dum) disproves

Green (OG)
Enters Lounge
Suggests Professor Plum with Lead Pipe in Lounge
Peacock (Dum) can't disprove
Plum (Nob) disproves

Round 3

Scarlet (mip)
Enters Lounge
Suggests Colonel Mustard with Candlestick in Lounge
Mustard (BBB) can't disprove
White (Wiz) disproves

Mustard (BBB)
Stays in Lounge
Suggests Mr. Green with Knife in Lounge
White (Wiz) can't disprove
Green (OG) disproves

White (Wiz)
Enters Kitchen
Suggests Mrs. White with Candlestick in Kitchen
Green (OG) can't disprove
Peacock (Dum) can't disprove
Plum (Nob) disproves

Green (OG)
Enters Conservatory
Suggests Mrs. Peacock with Knife in Conservatory
Peacock (Dum) can't disprove
Plum (Nob) can't disprove
Scarlet (mip) can't disprove
Mustard (BBB) disproves

Round 4

Scarlet (mip)
Enters Conservatory
Suggests Mrs. White with Lead Pipe in Conservatory
Mustard (BBB) can't disprove
White (Wiz) can't disprove
Green (OG) can't disprove
Peacock (Dum) can't disprove
Plum (Nob) disproves

Accuses Professor Plum with Candlestick in Conservatory
Winner!