BATMAN (1940) #637

Mr. Freeze and Black Mask argue about their working relationship when Black Mask finds out that there’s been no confirmation of his latest shipment. Meanwhile, Batman and Nightwing are fighting Amazo, part of that shipment. After destroying him, they search for his remain to confirm he’s no longer a threat. Back at Black Mask’s headquarters, he recieves a call from the Red Hood about a box of kryptonite.