Why is this not better known?
I grew up watching all the big British period epics of the '60s and '70s on TV: Zulu, Lawrence of Arabia, Alfred the Great, The Charge of the Light Brigade, The Man who Would be King, etc. Yet I never knew about this film until fairly recently.
Why is it so obscure? It has a big star in Michael Caine, plus lots of other familiar British actors including Trevor Howard, Donald Pleasance, and Jack Hawkins. It's based on a classic R. L. Stevenson novel, it's a colorful and entertaining adventure film.
What happened? Why is this an unknown movie today?