In Greek mythology, Lethe was one of the rivers of Hades. It is also the Latin word for forget. The next episode is Alethia, Greek for truth or unforgetfulness.
In a flashback to Finch's youth, his father is in a police car. On the side of the car is Iowa State police/ District 11.
District 11 of Iowa is Cedar Rapids, hometown of Michael Emerson.
District 11 of Iowa is Cedar Rapids, hometown of Michael Emerson.
The whistle trick that young Finch uses on the phone was explained in the movie Pirates of Silicon Valley (1999). The whistle you got in a box of Caption Crunch cereal made the same tone that ATT long distance used. So using the whistle you could get free long distance anywhere in the world.
At the episodes end PRISM is shown as one of the active systems. PRISM became public in June 2013.
This episode has no intro.