Presenting IDW's G.I. JOE stories in recommended reading order. Volume 4 contains issues focusing on Zartan and Snake Eyes from the Origins series, Erika La Tene, Serpentor, and Croc Master from the Cobra series, and the JOEs' rush to uncover anything they can about the mysterious organization known as Cobra.
Includes Cobra Special #2, G.I. JOE: Origins #16–19, G.I. JOE #18–22, and Cobra II #5–9.