Exploring the Silver Forest of Venus, Husky becomes trapped in the web of a Spirigum Spider. Haggarty manages to free him and discovers that fragments of the web act as a truth drug. Raeburn, meanwhile, is offered the formula for Kinotine, which has the ability to store heat indefinitely. Kinotine's inventor, Dr. Mason, will donate the formula but when a call is received from Kolig, head of Mars's largest chemical plant, offering the formula for sale, Raeburn suspects foul play
