Opened at the Booth Theatre on October 21, 1947. Ran 95 performances, to about January 1948. An Inspector Calls is a modern morality play and drawing room play written by English dramatist J. B. Priestley. It was first performed in the Soviet Union in May 1945 and at the New Theatre in London the following year. It is one of Priestley's best-known works for the stage and is considered to be one of the classics of mid-20th century English theatre. The play's success and reputation were boosted by a successful revival by English director Stephen Daldry for the National Theatre in 1992 and a tour of the UK in 2011–2012. Wiki link