Vivian Darkbloom in Pretty Little Liars

"Very few people know Vivian's true identity," says the Pretty Little Liars wiki.

Vladimir Nabokov's anagram, Vivian Darkbloom,  has appeared in Ada and Lolita (and in the Acknowledgments page of Arthur Philips's The Egyptologist). She now also appears in the ABC Family series Pretty Little Liars, where Vivian is the alter-ego of Alison DiLaurentis.

Thanks to the Nabokv-L Listserv and to Jansy Mello for the tip.