

The series follows the lives of four teenage girls - Aria Montgomery, Emily Fields, Hanna Marin, and Spencer Hastings- whose clique falls apart after the disappearance of their leader, Alison DiLaurentis. The series is loosely divided into four arcs of four books each, chronicling the introduction and reveal of each "A". The Liars, the 21st book and only audiobook, was released on June 16, 2022. Two companion novels, Pretty Little Love and Pretty Little Lost were released on June 16, 2017. Vicious, the 16th book, was released on December 4th, 2014. Toxic, the 15th book, was released on June 3rd, 2014. But in a more recent interview, Sara stated that she may do two or three more books after Deadly (the 14th book). Sara Shepard recently revealed that she plans on having two more books ( Toxic and Vicious), with Vicious being the last.

The 14th book, Deadly, was released on December 3, 2013. The 13th book in the series, Crushed, was released on June 4th, 2013. The series aired for seven seasons until it ended in 2017. In 2010, a TV series loosely based on the novels began airing on ABC Family (now known as Freeform). The novels have frequently appeared on the The New York Times Best Seller list. Moral ambiguity and the consequences of lying are featured prominently in the series the girls constantly create their own problems through their unwillingness, to tell the truth about certain events and misdeeds they have done. The novels explore several serious issues such as bullying, murder, pregnancy, family issues, drug addiction, underage drinking, eating disorders, homosexuality, peer-pressure, infidelity, and mental illness. Three years later, when the girls are juniors in high school, Alison's body is found, and they begin receiving various messages from someone using the alias "A" who threatens to expose their secrets and get revenge. The series follows the lives of four girls – Spencer Hastings, Hanna Marin, Aria Montgomery, and Emily Fields – whose clique falls apart after the disappearance of their leader, "Alison DiLaurentis". Pretty Little Liars is a series of young-adult novels by American author Sara Shepard, beginning with 2006's inaugural entry of the same name.
