"Back on the job at Spyral, Dick now has a mission all his own: find out more about Agent Zero. Scouring through the secret lab of deceased scientist and Spyral founder Otto Netz, Grayson finds his foes much closer than expected! To solve the case, there's only one solution: bring his own organization Spyral down from within. Dick's days as a double-agent may soon end in death! The hit series from Tim Seeley (NEW SUICIDE SQUAD) and Tom King (OMEGA MEN) continues here in GRAYSON VOL. 4. Collects issues #13-17"--