1. Order of Publication (books):
* Pretty Little Liars (2006)
* Flawless (2007)
* Perfect (2008)
* Wicked (2009)
* Unbelievable (2010)
* Killer (2011)
* Touched (2012)
* Twisted (2013)
* Burned (2014)
* Pretty Little Liars: Original Sin (2022) - this is a standalone novel and not technically part of the original series
2. Order of Episodes (TV Series):
* Season 1: 22 Episodes (2010-2011)
* Season 2: 25 Episodes (2012)
* Season 3: 25 Episodes (2013)
* Season 4: 24 Episodes (2014)
* Season 5: 25 Episodes (2014-2015)
* Season 6: 20 Episodes (2015-2016)
* Season 7: 20 Episodes (2016-2017)
3. Order of Events (Chronological):
This one is trickier as the series jumps between timelines. Here's a general idea:
* Early Years: Flashbacks to the girls' childhood and the events leading up to Alison's disappearance.
* Alison's Disappearance: The events of the first season, including Alison's disappearance, the girls getting their first "A" messages, and their initial investigations.
* Present Day (Season 1-3): The main timeline of the series, with the girls navigating their teenage years, the mystery of "A," and the search for Alison.
* Time Jump (Season 4-7): The series jumps forward two years, with the girls now older and dealing with new challenges.
Let me know if you have a specific order in mind, and I can provide a more detailed answer!