As Tiffany talks with Professor Fairgate, they walk by a motorbike parked at the curb twice.
Both times a hand is shown switching off a power main - first outside the Kappa Omega Psi house and then later in the school's locker room - it's the exact same shot of a box with a series of horizontal lines and a circle in the center. When Tiffany turns the power back on at the sorority house, however, the design of the box is glaringly different.
As Bosley asks Willie the librarian out for a drink, the shadow of a boom mike is visible on the bookcase at the top right of the frame.
When Bosley is briefing Charlie, it is definitely John Forsythe's voice, but it is definitely NOT him we see.
When Kelly, Kris and Bosley break into the apartment where Tiffany is being held, Kris mentions the sheikh. Although they knew Fairgate was involved in white slavery, they knew nothing about he procuring for a sheikh.
When Tiffany speaks to Fairgate for the first time, she refers to the two missing girls as Beth Thomas and Jenny Harris. The names of the two missing girls are really Beth Harris and Jenny Thomas.