Through the Looking-Glass, and What Alice Found There[source needed] was a book written by Lewis Carroll.
It was a sequel to Alice in Wonderland and was sometimes published together with it in an omnibus edition. (COMIC: Salad Daze) The Eighth Doctor had such an edition, The Alice Compendium, in the TARDIS library. (AUDIO: Zagreus)
Heather Lake and Annabel Lake read the book together. (COMIC: The Broken Man)
Ace also read a copy of Through the Looking Glass, in the TARDIS. (PROSE: Cat's Cradle: Time's Crucible)
Behind the scenes[]
Ace goes through the looking glass. (COMIC: Cat Litter)
In the twentieth anniversary special The Five Doctors, the Fifth Doctor misquotes a line from the book, saying "Like Alice, I try to believe three impossible things before breakfast." The actual line is "Why, sometimes I've believed as many as six impossible things before breakfast" and it is said by the White Queen, not Alice.
During a segment in the comic Cat Litter which has Ace going through a series of rooms in the Doctor's TARDIS, one panel recreates a well-known illustration from the original edition of Through the Looking Glass.
The Eleventh Doctor quoted "The Walrus and the Carpenter", a poem in the novel, in the television episode The Rings of Akhaten when he explained to Merry Gejelh why she should not sacrifice herself to Akhaten.
In the television episode The Power of Three, the Eleventh Doctor remarks, "Through the looking-glass, Amelia?" when he and Amy are about to pass through the secret portal to the Shakri ship. This is a reference to the events of the novel, where the main character enters the looking-glass world through a looking-glass.