Accidental Read

I didn't understand that Clamour of Crows wasn't an actual play!  The description says, "morality play"  and these were real plays, but now I guess it is a way of describing things that aren't really plays!  It's a book!  And I probably wouldn't have read it if I thought it was just an adult mystery book.  I mean, I pretty much just stick to the authors I know.  And that would have been a big shame, because I really enjoyed this book!