Supergirl #40

The "Who Is Superwoman?" mystery reaches its fourth chapter here, with Joshua Middleton's cover painting a striking picture of the tension at its heart — a massive, looming figure in a Superman-style blue and red costume grabs Supergirl by the wrist while she floats wide-eyed and clearly alarmed in the foreground. Sterling Gates and Jamal Igle's 2009 run on this series had been quietly building something special, and this installment, subtitled "Mistakes," suggests the answers Kara has been seeking may come at a cost.