Unless you've been living under a black hoodie, PLL: The Perfectionists has already made your Wednesday nights so much creepier.
The PLL spinoff has introduced us to a host of new characters that are just as suspect as everyone's favorite Rosewood posse.
But what you may or may not know is that, just like with Pretty Little Liars, the series is based off a books series of the same name.
So for those of you who have been slacking on your reading, here's a crash course on the details from the books that you should know.
1.First things first, the books had five main female characters — Ava Jalali, Caitlin Martell-Lewis, Mackenzie Wright, Julie Redding, and Parker Duvall — who all attended Beacon Heights High School in Washington. The show, however, is set in college.
2.In the books, Ava was described as being incredibly smart and had a boyfriend named Alex Cohen, NOT Nolan Hotchkiss.
3.Caitlin was basically The Perfectionists book version of PLL's ultra-sporty Emily Fields, and she dated her childhood BFF and fellow soccer player Josh Friday.
4.Mackenzie was the books' star cellist who competed with a musical rival for a spot at the prestigious Juilliard School — but she wasn't in the series premiere per se.
5.Also in the books, Parker was an it-girl turned social outcast due to a horrible incident with her father. Her best friend Julie was the only one who stuck by her side and helped her through thick and thin.
6.From the very beginning, the books portrayed Nolan as an antagonist intent on ruining people's lives and wielding his power over other students.
7.In the books, Parker was the only main character that Nolan was ever friends with.
8.Some of the characters' backstories have changed slightly: In the books, Ava had an evil stepmom who constantly stirred up trouble for her, and Caitlin had two loving moms and a younger brother named Taylor.
9.Mr. Granger, a college professor on the show, was a film studies teacher in the books, and he was guilty of some pretty terrible things.
10.And Then There Were None figures into both the books and the pilot episode. In the first book, students were assigned to watch the movie for Mr. Granger's class, but on the show, they were told to read the book for what appears to be a college English lecture.
11.In the books, the life-changing conversation about killing Nolan occurred during film studies class, but on the show, it happens during a nighttime meeting in the woods around campus.
12.They also proposed cyanide poisoning as a means of killing Nolan, courtesy of the classic films they had been watching in class.
13.Finally, in the books, Nolan died from an OxyContin overdose at his own party, just like the girls had imagined it. But in the first episode, he falls off a roof and lands on a fence spike.
Are you slowly starting to pick your jaw up off the floor? Same. Now the questions remain: Who will be revealed as Nolan's killer on the show? What roles will Caitlin, Dylan, and Ava wind up playing in the investigation into Nolan's death? And will other characters from the books be name-dropped besides Jeremy, Taylor, and Mr. Granger?