This is a public service announcement for any fans of Doctor Who.

I'm not sure why it should be a public service announcement, come to think of it, but I can't think of a better word, so there it is.

It is simply this: Captain Jack Harkness, whom we know and love, has an extremely close literary forebear, ie someone was doing some sneaky "borrowing" of some nearly-hundred-year-old literature.

( Oh, I am serious. )