Nowhere.
Lucy Hale will probably try music and no one will care
Ashley Benson and Troian will probably get some B-List hallmark/lifetime movies, with Ashley probably staring in a future Sharknado film.
Shay Mitchell will probably appear in more MVs and keep travelling, maybe she'll get E! Reality show that runs for 2 seasons before getting cancelled
Janel Parrish will get star on some random shows like Criminal Minds or NCIS:Burkina Faso or something
Sasha Pieterse, maybe QVC or the Home Shopping Network
