Captain America: Sentinel of Liberty (Captain America: Sentinel of Liberty Vol. 2 #3)

Steve Rogers tracks the mysterious organization known only as the Outer Circle to a lab in the heart of a volcano, where the original creator of the shield left behind a dire message. But the Outer Circle isn't going to let the information go without a fight. Who - or what - is the Redacted? And will Steve survive long enough to find out? Meanwhile, Bucky Barnes finds himself in a high-stakes battle with none other than the Dryad herself... Peggy Carter!