The historical mystery concludes with the trio of friends exposing and stopping the fascist conspiracy led by Senator Tom Voigt to overthrow the U.S. government. After piecing together clues about the secret group behind the murders of the senator’s political enemies, Burt, Harold and Valerie infiltrate the veterans gala where Voigt plans to initiate a coup. They broadcast evidence of Voigt’s treason over the radio, foiling his plot and leading to his arrest. However, the bittersweet ending finds Harold poisoned and Valerie’s terminal illness worsening, even as their crusade for justice succeeds. The conclusion sees the characters upholding their moral principles at great personal cost, sacrificing their health and happiness to protect American values from corruption. Though they save their country, the friends find themselves broken and exiled back to Amsterdam, paying the price for standing up to tyranny. The ending captures how exposing the truth requires courage and integrity, but comes with consequences.