(STOCKBRIDGE, Mass.) – Actress Karen Allen, who played the lead role of Marjorie in the original 1983 off-Broadway production, will direct William Mastrosimone’s Extremities running through Sunday, July 27, 2013, at Berkshire Theatre Group’s Unicorn Theatre. In William Mastrosimone’s psychological thriller, a young woman is violently attacked in her own home by a would-be rapist.…