👍👍👍A massive THUMBS UP to the inclusion of multiple sub-genres on titles.

Of course, my day is not over until I make one complaint:

While both are colloquial terms, whodunit (with 1 n) is much, much more widely used than whodunnit (with 2 ns)

Additionally, the former form is especially widely used in the U.S. and IMDb generally defers to U.S.  conventions in these matters.