Zack, Ella's boyfriend, will be returning.
Mrs. DiLaurentis will be returning to Rosewood and living in the old DiLaurentis house. She is coming back with a agenda, which may seem dark.
Jason, Cece, Lucas, and Wren are ALL RETURNING this season.
Paige will be verry important in the first four episodes.
We will get some insight to who was buried or not buried the night Alison went missing. The flashback of the hand coming out of the ground with another pulling it out will be explained a but, according to Oliver Goldstick.
In 4x03 "Cat's Cradle," there will be a Paily scene involving a pool.
There will be a new character named Hector Lime, who makes masks.
In 4x04, "Face Time," there will be a new character named Linda Tanner, who is a cop.
*Face Time...maybe mugshot? Considering the new cop?
In 4x05, "Omega Sigma Die," Mike is said to return!