Pretty Little Liars Season 4 Episode 1: Live stream of past episodes to watch online- Premiere tonight on ABC Family [Start time, VIDEO]

The stars of Pretty Little Liars.(ABC Family)

Pretty Little Liars Season 4 will finally premiere tonight at 8 p.m. ET on ABC Family. In anticipation of the new season of the hit drama, the cast and creators held a special panel at the Paley Center in Los Angeles on June 10 which was available via live stream. The Q&A session answered fans' questions regarding the show.

Tonight, fans will finally be able to see what was in the truck after the Season 3 finale of the show ended in suspension, with the girls driving back into town following the fire only to discover Detective Wilden's cop car had come back.

A video from the car had revealed that after Ashley Marin hit Detective Wilden, he was helped by Jenna and Shana. Then the girls opened the trunk of the car to reveal the latest shocking twist.

After months of speculating what could be inside the truck, fans will finally find out what the secret is. Spoilers and rumors have indicated that whatever was in the trunk was something very "disturbing."

Whatever was in the trunk will definitely be revealed in Episode 1 of Season 4.

Clues have been placed on the Pretty Little Liars Facebook page, which has indicated that the first episode of the new season will be called "A is for A-l-i-v-e."

The clues have been put in a Q & A format with the first question asking, "Will it break if you drop it?"

The response from "A" is, "It won't break, but it might leak."

A photo was also posted alongside the answer but it is dark and unclear exactly what it is. Fans have speculated that it shows a blanket or legs.

In a second clue a question is posted asking, "Is it something warm?"

To which "A" responded, "It was warm. Some would even say hot."

Another photo is posted but again it is difficult to see what it is. But fans have taken the clue that it is warm, to mean it will definitely be a body.

A third question asks, "Is it something small?"

The Season 4 premiere of Pretty Little Liars is set to air on Tuesday, June 11 at 8 p.m. ET on ABC Family.

A streaming of the past episodes of Pretty Little Liars is available on the ABC Family site for fans who want to catch up before tonight's premiere. Go to the ABC Family site for all the previous episodes of Pretty Little Liars via live stream.

Click here for preview photos of the Pretty Little Liars.

Watch an interview with the Pretty Little Liars' cast below: