Sophie says, "The play's the thing wherein I'll catch the conscience of the king." This is a line from Hamlet by William Shakespeare.
This is the third appearance of FBI Special Agents Taggert and McSweeten, who were both previously seen in the season 1 episodes "The Bank-Shot Job" and "The Wedding Job," both of which they reference when explaining what they've been up to.
The title of the headmaster's grad school thesis is "Deconstructing the Social Stratification of Botswana's Educational System". The formatting of the title page shows it was written with the LaTeX typesetting program.