Order of Pretty Little Liars Books
Pretty Little Liars is a series of young adult novels by American novelist Sara Shepard. The series follows four girls – Spencer Hastings, Hanna Marin, Aria Montgomery and Emily Fields – whose group falls apart when their leader, Alison DiLaurentis, disappears. Three years later, her body is found and they start getting messages from a mysterious person using the name “A” who vows to expose their secrets and get revenge. The series has been adapted to a teen drama on ABC Family.
The Pretty Little Liars series began in 2006 with the title novel. Below is a list of Sara Shepard’s Pretty Little Liars books in order of publication as well as in chronological order:
Publication Order of Pretty Little Liars Books
| Pretty Little Liars | (2006) |    |
| Flawless | (2007) | |
| Perfect | (2007) | |
| Unbelievable | (2008) | |
| Wicked | (2008) | |
| Killer | (2009) | |
| Wanted | (2010) | |
| Heartless | (2010) | |
| Twisted | (2011) | |
| Ruthless | (2011) | |
| Pretty Little Secrets | (2012) | |
| Stunning | (2012) | |
| Burned | (2012) | |
| Ali's Pretty Little Lies | (2013) | |
| Crushed | (2013) | |
| Deadly | (2013) | |
| Toxic | (2014) | |
| Vicious | (2014) | |