Jacob Thomas "Jack" Grein was a British impresario and drama critic who helped establish the modern theatre in London. Born and raised in Amsterdam, Grein moved to London in 1885 and was naturalized in 1895. His greatest achievement was founding the Independent Theatre Society in 1891. The Independent was the first of several companies run on a private, subscription basis to bypass the Lord Chamberlain's prohibition of what he deemed offensive material. Their first production was Henrik Ibsen's "Ghosts" in 1891, and George Bernard Shaw's first play "Widowers' Houses" the next year. Grein married the actress and playwright Alice Augusta Greeven in 1904. The Independent Theatre ceased operations in 1897. Grein was involved with similar ventures, such as the Stage Society (1899 onwards), the London German Theatre (1901-7), the French Players (1917), and the People's Theatre (1923). This volume presents the man and his struggle to make theatre in London more sophisticated, modern, and cosmopolitan.