Justice League of America #27 (1964)

Justice League of America #27 (1964) is a thrilling adventure that sees the JLA facing off against an extradimensional being who wants to put an end to their success. As the team responds to fan mail, they receive intriguing letters from Bruce Wayne, Ray Palmer, and C. King that push them into action. The Flash, Green Arrow, and Snapper Carr head to Gotham City to investigate a string of thefts, while Wonder Woman and the Martian Manhunter investigate a self-firing cannon, and Superman and Green Lantern look into the mystery of a disappearing island. However, everything changes when they are all brought together by the villainous "I" and stripped of their ability to succeed together. Desperate to save their team, the Justice League of America must reactivate the android Amazo and work together as a team once more to take down the villainous "I". In the end, the team solves all of their cases, including discovering that the "invisible thief" was actually the victim's sleepwalking alter-ego, and taking down a ring of bank robbers using timed explosions. This exciting story is a must-read for all fans of classic Justice League of America comics.