The second movie in the BFI’s Kurosawa box set, Throne of Blood (1957) was a total mystery to me. I hadn’t seen Seven Samurai, but I at least knew the rough plot outline. All I knew about Throne of Blood was what I could figure out from the cover, which was that some liberties had been taken with the original Japanese, ‘Spiderweb Castle’. Or as the subtitles put it more fustily, ‘Cobweb Castle’. About ten minutes in though, it became clear this was Kurosawa doing Macbeth, and knocking it out of the park.