Flash, Vol. 1

Walter Drake has developed a way to send a time capsule to the future for posterity. He's suddenly uncooperative with the press, but reveals to the Flash that the included atomic clock will become an atomic bomb due to the trip. The Flash heads to the future to prevent the disaster, but his search is encumbered by the existence of Professor Zoom, a super criminal who has given himself the same superspeed as the Flash.