 They discover a manhole hidden underneath the grass and go down and explore underground.They discover the body of Kelly and overhear Dr. Sturm talking to Mrs Peel about his plans through the vent to the distillery and that he intends to sell his rainmaking device to a military nation of the highest bidder and describes it as the greatest weapon since the atomic bomb, a "great flood".Steed and Jonah enter the distillery through the vent when the doctor departs, and free Mrs Peel from the machine.