BAD THING: Despite a glossary in the back that tries to explain away some of the more obscure in-jokes that American audiences are likely to miss (i.e. the nod to The Avengers and I don't mean the ones led by Tony Stark), there's quite a bit that can still be missed by your average American.
I had to explain to a friend, for instance, that Morris Dancing has a number of traditions behind it - among them the belief that the ritual of the dance causes certain things to happen, like the start of summer or the end of winter. So the idea of a group of men doing a magical dance in order to turn back time or open a portal to another reality is just an application of the ritual magic performed by cults in your average H.P. Lovecraft story being applied to what most see as a harmless folk tradition that is only practiced "seriously" in a few remote English villages.
This is also why the presence of a woman disrupts the magic. Because even if you don't believe that the presence of a woman can foul-up the masculine energy being drawn upon, the fact that the Morris Men believe that is enough to shake their faith in the spell. You see?
GOOD THING: Another fascinating plot, though one perhaps more worth of Hellblazer than Batman and Robin as The Knight and Squire investigate a cult of Morris Dancers.
The Final Verdict: Still an enjoyable series for an Anglophile like myself. I can't help but think that this is a bit much for the average American comic book reader, even with the glossary at the end.