When Wyckoff goes to the office of Dr. Faron in the Criminal Courts Building, the number is plainly printed on the door . But, in closeup, the number is covered with plastic or glass held in place by four screws.

On the directory of the Criminal Courts Building, the last two entries of "Quinman, R.A." and "Quimore, C." are out of alphabetical order.

Perhaps a joke by the set designer, in an early scene, the dashboard of the bus shows an air conditioner control with the settings HEATING, OFF, and "MANUEL" COOLING.