Avontuur Classics #1835

In the strange silence of an alien world, Earthman Bul and his companions are welcomed as honored guests—yet not all on the planet share that warmth. When a warning from Bul exposes a faction of fanatics who see them as spies, the group is lured into a sealed chamber, where a deadly gas begins to eat through their helmets. With time running out, they send a desperate call for help, trusting Bul to save them before it’s too late.