Do the Pretty Little Liars books have to be read in order?

It is not necessary to read the Pretty Little Liars books in order, as each book tells a self-contained story. However, some readers may prefer to read the books in order in order to follow the character development and overall plot arcs.

The Pretty Little Liars series consists of 16 books, divided into two arcs: the original PLL series and the PLL: The Perfectionists duology. The original PLL series can be read in any order, but the PLL: The Perfectionists duology should be read in order.

Here is a list of the Pretty Little Liars books in the suggested reading order:

Original PLL series:

1. _Pretty Little Liars_

2. _Flawless_

3. _Perfect_

4. _Unbelievable_

5. _Wicked_

6. _Killer_

7. _Heartless_

8. _Wanted_

9. _Twisted_

10. _Ruthless_

11. _Stunning_

12. _Dangerous_

13. _Deadly_

14. _Toxic_

15. _Vicious_

16. _Merciless_

PLL: The Perfectionists duology:

1. _The Perfectionists_

2. _The Good Girls_