* ClarkesThirdLaw is brought up twice, courtesy of the Doctor.
* ''Sherlock Holmes for Dummies'' '''is''' a real book!
* Kit Bennett is indeed a shout-out to ''Kitty'' Bennett from ''Literature/PrideAndPrejudice''.
* When Beth tells Holmes that her middle name is "Anne", she adds that [[Literature/AnneOfGreenGables it's spelled with an "e"]]. Fair enough, though: Elizabeth Ann ''is'' used as a proper name.
* [[OneOfUs Thanks to Beth]], Franchise/StarWars and Literature/TheLordOfTheRings are briefly discussed.
** And she once uses Han Solo's most famous line: "I know".
* Holmes very movingly recites a love poem by Pablo Neruda.