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One of my favourite books in the Dresden Files. I love when all the characters get together for an end-of-the-world scenario and the stakes are higher than high.
I loved this book. I thought it was a very strong follow-up to Storm Front. I really enjoyed how thoroughly the mythology of werewolves and different mythologies of these creatures were explored and evaluated. There were a lot of "Holy shit!" moments that made me frantically page forward, hoping person X or person Y wasn't dead. Addictive series, this is!