A few things about this issue: Readers will meet the greatest threat to face the Flash family in decades. A new hero will step into an old speedster's boots. Barry Allen makes the ultimate sacrifice. Yep. You read that correctly. Courtesy of superstar writer Geoff Johns and artist Ethan Van Sciver. You've heard it said before, but this issue doesn't dance around it -- nothing will be the same. FLASH: REBIRTH #5 hits 11/18.