I'm currently reading Uncorking a Lie by Nadine Nettmann. This is the second in the Sommelier Mystery series and will be released May 8th.
Paul Rafferty has finally found the bottle he's been searching for, the 1975 Chateau Clair Bleu and is celebrating with a special dinner with friends, including sommelier Katie Stillwell. But when Katie opens the wine, she immediately notices something wrong. The $19,000 bottle of wine is a counterfeit! Cooper, the only other person aware of the fraud dies that night in an apparent accident, but Katie isn't so sure his death was accidental. Finally telling Paul the truth about the wine, he hires to to find out who is behind the counterfeit wine. Between working her job at the restaurant and studying for the Advanced Exam, Katie will attempt to ferret out the truth and uncork a lie.