“The Sins of Anton Bock”
Professor Roberts has perfected a powerful gas, a gas too dangerous to sell or even use, so he decides to destroy it. Before he can do so, he is kidnapped from his lab. Later, Darrel and Martha track his movements to the waterfront, where there are strange lights of red, blue and green, as well as mysterious noises. Doll Man steps in to corner the crooks and save Professor Roberts.