It looks like Comixology is offering Detective Comics # 871 (Part 1 of The Black Mirror) for Free today I believe. I was outside of DC prior to the New 52; I'll pick this issue up, but I was wondering --
Is the whole arc (I think it's 871 to 881) worth checking out? (If possible, could you avoid any spoilers just in case I, or others, choose to check it out based on your recommendations?)
Thanks.