The Flash #28

This volume is issue #28 of The Flash series from DC's "New 52" era, with the single-issue title "Deadman Walking." The story follows the thread from the previous issue, "History Lessons": the Flash, Barry Allen, and the Fletcher line, a founding family of Central City, are being hunted by a vengeful spirit, and in a cemetery they unexpectedly encounter Deadman (Boston Brand), the ghostly hero of the Justice League Dark. The ghost possesses Barry, causing him to briefly lose control of his body, until Barry finally expels both spirits from his body by vibrating at super speed. As the vengeful spirit jumps into a passerby, Barry and Deadman join forces to investigate the truth: the so-called "Keystone Killer" is in fact Ulysses Sutter, a gold prospector from a century ago who, after falling out with his partner Marshall Fletcher, died miserably in a mine; his grudge has endured for one hundred and fifty years, targeting all of Fletcher's descendants—numbering in the thousands. Meanwhile, Patty Spivot and Forrest of the Central City police lab are assigned to investigate the museum murder, and Captain Frye warns Patty to stop meddling in the old Nora Allen case, sowing doubt in Barry's mind about the mentor who is like a foster father to him. This issue advances the "History Lessons" arc by interweaving criminal investigation with supernatural mystery, and also plants new seeds for the case of Barry's mother.