Mature audiences?
The Acorn Media DVD set says "recommended for mature audiences." Why is that? I haven't read the book, and the content guide here on IMDB is empty, so a little help would be appreciated.
I notice that BBFC rated the BBC "Tinker Tailor..." series as PG, but "Smiley's People" as 15. What makes it deserve the more restrictive rating?
Thanks.