Talk:'A' is for A-l-i-v-e/@comment-5224716-20130430222630

It's confirmed, Caleb leaves PLL in Hallowen episode, so he won't be in 4B (but he'll be in 4A though).

http://www.etonline.com/tv/133506_Tyler_Blackburn_Goes_From_Pretty_Little_Liars_to_Ravenswood/index.html