Revealing mistake: At the start when the camera pans away from the dead body, the "D.B." swallows when he's supposed to be dead.
Audio problem: When Nick and Warrick find the dead man's flying equipment, Nick says "Bingo" but his lips don't move.
CSI: Crime Scene Investigation (2000)
2 mistakes in High and Low - chronological order
[To a room full of dead corpses, after Holly Gribbs was frightended into hysterics.]
Gil Grissom: You assholes!
More trivia for CSI: Crime Scene Investigation
More questions & answers from CSI: Crime Scene Investigation
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.