TV New Pretty Little Liars: The Perfectionists promo promises 'somebody is watching' By Samantha Highfill Samantha Highfill Samantha is a writer based in Los Angeles. Television is her one true love, and she tweets about it. A lot. EW's editorial guidelines Published on February 14, 2019 03:00PM EST Wherever Alison DiLaurentis goes … someone follows. (Or, in certain cases, multiple someones.) EW has an exclusive first look at a new promo for Pretty Little Liars: The Perfectionists — the Pretty Little Liars spin-off — which follows Alison and Mona from Rosewood to Beacon Heights, which could potentially be even sketchier than Rosewood? The spin-off is based on The Perfectionists book series from PLL author Sara Shepard and kicks off when someone in town is murdered. (This time it’s not Alison, thankfully.) From there, there’s no telling where the mystery is going to go, but based on the new promo, it seems possible that Red Coat could play into the new series. Sasha Pieterse and Janel Parrish reprise their roles as Alison DiLaurentis and Mona Vanderwaal in the spin-off series, which adds Sydney Park, Kelly Rutherford, Eli Brown, and Sofia Carson to its cast. Watch the new promo above. Pretty Little Liars: The Perfectionists premieres Wednesday, March 20 on Freeform. Related content: Pretty Little Liars: The Perfectionists gets March premiere date, official trailer Pretty Little Liars: The Perfectionists lands series order at Freeform Pretty Little Liars spin-off adds Walking Dead and Gossip Girl stars