The Dinner Party

You saunter over to the lady and ask her if she needs a drink. Hearing her response, you and the quiet lady walk out of the room and back into the dinning room. Seeing the enormous amount of liquor on the table, you ask her,
" Now, what would the lady like?"
She softly responds with a very intense English accent," Just a glass of Cabernet."
Hearing this, you grasp onto the 1987 Malbec Cabernet and using a bottle opener, you pop the old worn cap off the wine. Exposing the dry acidic stench, you knew this alcohol would be the perfect distraction. The next thing everyone knew, there was yet another person missing, and this time they could not find the body. Once again, you realized that this was not the thief. You keep making the same mistakes. What decision will push you forward onto making the right call next time?