Finch is convinced that Nina has an imaginary alter ego while Maya discovers how Jack deceived her on Halloween many years ago.
Did You Know?
The scene with Jack in the gorilla suit throwing around the suitcase is an homage to/spoof of the famous American Tourister ad showing a gorilla (actually a chimpanzee) throwing a suitcase around to show how durable it was. See more
I just went over Nina's roladex, and do you know what's missing?
A working knowledge of the alphabet?
References The X-Files