Justice League of America #63
In "Time Signs a Death-Warrant for the Justice League!", the League faces a terrifying twist when the Key manipulates a trophy in their collection, forcing them to turn on one another within the hour. Written by Gardner Fox and brought to life by Mike Sekowsky’s dynamic art and George Roussos’s precise inks, this 1968 classic pits the heroes against both time and their own trust. The cover, a striking collaboration by Jim Shooter, Mike Sekowsky, and Jack Abel, captures the escalating tension perfectly.
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The Key gains control over the Justice Leaguers through a trophy in their collection and compels them to kill each other when one hour elapses (which gives them time to figure out a solution).
Plot details indexed by the Grand Comics Database (CC BY-SA).