The Theater Barn , located at 654 Route 20 in New Lebanon, NY, announces the line-up for its 2019 summer season. Plays: Ken Ludwig’s “Baskerville: A Sherlock Holmes Mystery” June 21 – 30, 2019 Agatha Christie’s “Witness for the Prosecution” July 4-21, 2019 Musicals: “I Love You, You’re Perfect, Now Change…