Video: Keegan Allen Reveals Who's the Biggest Prankster on the 'Pretty Little Liars' Set

While Pretty Little Liars is one of the most suspenseful and dramatic shows on TV, in this week’s Pretty Little Low Down with Keegan Allen, we get him to reveal some of the on-set pranks that have been known to happen. Be careful around Ashley Benson!

Plus, Keegan opens up about fashion, why he loves playing the villain and even more PLL secrets from our sit down at Dylan’s Candy Bar in New York City.

Pretty Little Liars airs Tuesday nights at 8 p.m. on ABC Family.

What’s been your favorite moment so far this season? Tell us in the comments below or on Twitter @OKMagazine and follow Keegan @KeeganAllen

MORE VIDEOS YOU HAVE TO SEE:

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* CONOR MAYNARD REVEALS THE THING YOU CAN DO TO GET HIS ATTENTION!

* VIDEO: 'TRANSFORMERS' STAR MEGAN FOX EXPLAINS WHY SHE'S NOT FOCUSING ON HER CAREER