All-Flash #4

In "The Tale of the Time Capsule! Chapter 1: [Miracle of Sleepian]," Professor McQuatness unveils a revolutionary formula pill that lets users manipulate their body's electrons for time travel. When he convinces the skeptical Flash to journey back to 50 B.C., Joan Williams and a group of crooks follow—setting off a chain of events that could rewrite history.

When the Flash loses his super speed, he’s thrust into ancient Rome as a galley slave under Julius Caesar, while modern crooks—armed with machine guns—ally with the Egyptians in a clash of eras. In this wild, time-twisting adventure, ancient might meets futuristic firepower in a battle that defies history.

In "The Tale of the Time Capsule! Chapter 3: Breakneck Speed -- 50 B.C." from All-Flash #4, the Flash, newly restored to his speed, finds himself caught between two urgent calls: aiding Caesar’s soldiers in a desperate battle and answering the desperate pleas of Roman citizens yearning to break free from Caesar’s rule. As Brutus, sworn enemy of Caesar, secretly plots with future criminals to eliminate the dictator—now including the Flash as an unexpected obstacle—the race against time grows as dangerous as it is personal.

In "The Tale of the Time Capsule! Chapter 4: Traipsing through Time!", the Professor and Joan find themselves racing against time once more—this time not just through history, but through the very fabric of it. When the crooks learn of a hidden time capsule left behind in ancient Rome, they seize the Professor and Joan, dragging them to present-day Rome in a desperate bid to claim its lost treasure.