The Entertainer (play) Holm as Jean and Bertie Carvel as Frank. In 1960, a paperback novelization by John Burke was published by Four Square Books to coincide with the release of the film. Though the attribution line says "based on the play", it is actually based on the screenplay by Osborne and Nigel Kneale. The Entertainer (play) The Entertainer is a three-act play by John Osborne, first produced in 1957. His first play, "Look Back in Anger", had attracted mixed notices but a great deal of publicity. Having depicted an "angry young man" in the earlier play, Osborne wrote at Laurence Olivier's request
Mary Pope Osborne had a major effect on the teens. Osborne says she tried writing the book seven different ways before finding a way that worked." It introduces the main characters of Jack and Annie, a brother and sister duo of adventurers who are transported to different areas of time thanks to the titular magic treehouse. The first book established the format for feature books and introduced recurring characters Morgan le Fay and Merlin, as part of the Arthurian motifs. Osborne says she is more like Jack but wishes she was more like Annie. Osborne tends to place small cliffhangers at the end