The mystery begins when a trio of Vikings bursts forth from a S.T.A.R. Laboratory, and deepens when an ancient relic is uncovered with an inexplicable connection to Black Canary. Oracle sends Canary on the trail, but the doorway to the past goes in both directions.

Written By:
Chuck Dixon
Jackson Guice
Jackson Guice
Cover By:
Todd Klein, Jackson Guice, David Smith