Talk:'Til Death Do Us Part/@comment-26837635-20170628185431

Marlene King was thinking about Melissa or Wren being A.D but didn't write it in as she wasn't sure that the actors who play them would be available for the last ten episodes. Which is why Alex is A.D as Torian is a regular and it was easier to do so

'Pretty Little Liars' Creator Breaks Down the Series Finale and Teases What's Next for the Franchise - The Hollywood Reporter https://apple.news/AglkksvM_SFmgbn-5IxqahA