La Ligue de Justice #3

When the Justice League of America prepares to welcome the Justice Society of America through their transmatter machine, the arrival of the Crime Syndicate shatters the moment—proof that their prison has been breached. Racing to Earth-2, the League discovers a world conquered by Per Degaton in 1942, forcing them to join forces with the freed JSA and the All-Star Squadron to confront a timeline rewritten by a villain long thought defeated.

In "Le mystère d'octobre," Per Degaton's return to 1947 sets a chilling course: he aims to alter history by exploiting the Cuban Missile Crisis of 1962, using the Crime Syndicate to steal nuclear weapons from Earth-Prime. As the All-Star Squadron, the Justice Society of America, and the Justice League of America converge in a shared dream, they uncover the grim fate of Earth-Prime and must race against time to prevent a catastrophe that could unravel reality itself.