Batman/Superman: Who Are the Secret Six? is the first collection of Batman/Superman (Volume 2).
Issues
- Batman/Superman (Volume 2) #1 (Who Are the Secret Six?, Part One)
- Batman/Superman (Volume 2) #2 (Who Are the Secret Six?, Part Two)
- Batman/Superman (Volume 2) #3 (Who Are the Secret Six?, Part Three)
- Batman/Superman (Volume 2) #4 (Who Are the Secret Six?, Part Four)
- Batman/Superman (Volume 2) #5 (The Secret Six Strike!)
- Batman/Superman (Volume 2) #6 (Infection Aftermath)
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