Expert Deduction #23
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The Case
Two guests fell ill at a dinner party. Toxicology confirmed a compound in their wine. Twelve guests were at three tables. The host Felix decanted the wine. Sommelier Bruno served it. Cook Adele prepared the food. Guest Marcus brought a gift bottle. Guest Tilda arrived late. Case file EXPERT-023.
Who poisoned the wine?
Evidence (9)
#1The two sick guests (Margaret at Table 1 and Ivan at Table 3) both drank red wine.
#2Three red wine bottles were opened: A, B, and C. Bottles were labeled by table number.
#3Sommelier Bruno admits he accidentally swapped the labels on bottles A and C during service.
#4This means Margaret and Ivan actually drank from the same original bottle.
#5Host Felix decanted one bottle into a crystal decanter 20 minutes before dinner while alone in the dining room.
#6The toxin was found in the decanter residue. The original sealed bottle tested clean.
#7Bruno handled all three bottles but poured directly — the decanter was already prepared by Felix.
#8Adele never touched the wine. Marcus's gift bottle was white wine, unopened.
#9Tilda arrived after the wine had already been poured. She drank water.