Doc Savage (1972) #4 — “The Hell-Diver!”

Short synopsis: In Doc Savage #4 (April 1973), the investigation into the mysterious criminal group known as the Silver Death’s-Heads continues. The story, adapted from Lester Dent’s original Death in Silver, follows Doc Savage as he uncovers a deadly plot tied to a high-stakes heist and a hidden weapon. Savage’s team — including Monk, Ham, and Tom — faces danger at the docks, in a Brooklyn boathouse, and aboard a submarine, while Doc’s trusty Helldiver roadster plays a key role in the chase. The issue blends classic Doc Savage adventure with suspenseful action, culminating in a confrontation that tests both Savage’s ingenuity and his allies’ loyalty