BATMAN (1940) #342

“REQUIEM FOR A HERO.” Batman battles Rupert Thorn and the deadly Man-Bat! Batman will have to return to Crime Alley where he will uncover Man-Bat’s origin! Doctor Thirteen enters the Batcave just as the Man-Bat has Batman in his clutches. He tries to pistol whip the Man-Bat with his sonar gun, but the Man-Bat backhands Thirteen, sending him crashing into a cavern wall, knocking him unconscious. Batman picks up the weapon and, realizing what it is, activates it. The high-pitched sonic vibration sends the Man-Bat reeling in pain and he swoops off down a darkened corridor.…