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A criminal mastermind and explosives expert, "The Falcon," has created a huge falcon-shaped cannon and demands an exorbitant ransom so he won't destroy Denver. Jim and Artie infiltrate the Falcon's organization and discover that criminals from across the world have arrived to see the cannon's demonstration and bid on the weapon.
Jim and Artie are at the town of Tonka Flats, waiting until noon while the Army oversees the citizen evacuation. The agents spot a falcon flying overhead, and then ride over when a woman objects to the soldiers. She complains that they’re being moved for no reason, and all Artie can tell her is that it’s dangerous to stay in Tonka Flats. Once everybody is out, Jim and Artie clear out with the soldiers. They’re unaware that four men are watching from hidden spots on the hillside...Read the full recap
Jim examines the dead Falcon soldier.
Artie gets a sedative injection.
The Falcon suggests they conclude their transaction.
Artie discovers the gun was loaded after all.
The Falcon-Cannon was the single largest prop created for the show in its entire run. It was originally designed with the bird's wings spread out, but budget constraints led to it being built with the wings furled against its sides.
At the Wanderer, Artie is seen using a three-ring binder of the modern variety to hold his notes. The ring binder wasn't invented until 1886, and the series is set during the Grant presidency, which ended in 1877.
When Artie learns that the prescription came from Sinful, he identifies it as being at the center point of three towns: Salildas, Rome Plateau, and Tonka Flat. However, the first two towns aren't mentioned anywhere in the episode.
At the crime conference, none of the three criminals see through Artie's disguise. While all of Artie's disguises require a certain suspension of belief, in this case Artie has a much fuller head of hair than Munez did, and all three criminals saw Munez earlier without his hat.