This is the log of what happened so far

Round 1

Scarlet (Wiz)
Enters Lounge
Suggests Mrs. Peacock with Knife in Lounge
Mustard (Dum) can't disprove
White (mip) can't disprove
Green (Nob) disproves

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

Peacock (BBB)
Stays in Lounge
Suggests Mrs. White with Revolver in Lounge
Plum (OG) can't disprove
Scarlet (Wiz) can't disprove
Mustard (Dum) can't disprove
White (mip) disproves

Plum (OG)
Enters Library
Suggests Mrs. White with Revolver in Library
Scarlet (Wiz) can't disprove
Mustard (Dum) can't disprove
White (mip) disproves

Round 2

Scarlet (Wiz)
Enters Conservatory
Suggests Colonel Mustard with Revolver in Conservatory
Mustard (Dum) disproves

White (mip)
Stays in Library
Suggests Mr. Green with Wrench in Library
Green (Nob) can't disprove
Peacock (BBB) disproves

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

Plum (OG)
Moves outside Study

Round 3

Scarlet (Wiz)
Enters Lounge
Suggests Mrs. White with Revolver in Lounge
Mustard (Dum) can't disprove
White (mip) disproves

White (mip)
Enters Conservatory
Suggests Professor Plum with Candlestick in Conservatory
Green (Nob) disproves

Peacock (BBB)
Enters Lounge
Suggests Mrs. Peacock with Lead Pipe in Lounge
Plum (OG) can't disprove
Scarlet (Wiz) disproves

Plum (OG)
Enters Lounge
Suggests Miss Scarlet with Revolver in Lounge
Scarlet (Wiz) can't disprove
Mustard (Dum) can't disprove
White (mip) disproves

Round 4

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

Accuses Mrs. Peacock with Knife in Kitchen
Winner!