Nagel
| Played by | Steve Rosen |
| Name | Nagel |
| Status | Alive |
| Residence | New York, NY, U.S. |
| Appearance | “The Perfect Mark” |
Nagel works at an auction house in NYC where he determines whether items are fake or not.
Raymond Terney and Hayden Price brought him a $4,000,000 baseball signed by the 1922 Yankees baseball team. Nagel pointed out Babe Ruth's signature was signed in felt pen, declaring the ball a fake because such pens didn't exist yet in Ruth's time.