1- One of the girls is going to make a deal with “A” thus betraying her friends.
2- Spencer and Toby kiss and may get back together in this episode
3 - Producer Marlene King has also revealed that a character in this episode gets “tortured” by “A” in their “lair” and while shooting the scene it moved several crew members to tears.

I think Ezra and Wren are working together.
Who knows, they might even be step brothers (;
good theory :)

A has a helper.
A helper that can easily turn on him and try to rat him out.
Also, not all gloved hands are A.
