Pirates of the Third Reich - S6-E16
Factual error: The Titan arum, corpse flower, has some problems in this episode. First, the flower grows naturally in the tropical forests of Sumatra. It is not very likely to survive sitting on a bench in the arid desert sun of Nevada. Second, Brown and Stokes track the smell of decomposing flesh to the flowers on the bench. The question is asked who would have a corpse flower besides someone trying to cover the smell of a decomposing body. To start with, none of the plants shown are flowering. The corpse flowers stench comes about when the flower opens. Then there is the rarity of the bloom itself. The botanical gardens around the world with corpse flowers make a very big event out of the bloom. Also, the bloom lasts no more than 36 hours. And then there is the stench of the bloom itself. That stench lasts no more than 8 hours. All this makes it useless to try to hide the smell of dead bodies with this plant and makes it impossible for Brown to state the plants are giving off the odor of decomp.
Answer: He doesn't have the authority to arrest him - when anyone is arrested in the show, a police officer does it. Also he tells Ty that he is going to be submitting his case findings to Ty's insurance company, who would no doubt contact the IRS, who then would have him arrested for fraud etc.