Pretty Little Liars 100th Episode, The Walking Dead Special and More on TV Tonight

It's #PLL100 day! And some other major TV milestones are about to go down tonight, too. A reality show about people who've never met getting married to each other? Oh yes. It's happening. Get the deets:

OK! News: Here's What Happened on Andi Dorfman's Hometown Dates

Pretty Little Liars. 8pm on ABC Family. In the 100th episode, Ali goes back to school, Caleb returns to make Hanna's love life more complicated, and Jenna comes back to Rosewood, too, to nobody's excitement. PS: Get details on tonight's PLL Twitter scavenger hunt HERE!

OK! News: How Much Money is Solange Knowles Worth?

Married at First Sight. 9pm on FYI. The title of this new series says it all. Six couples will attend their weddings, where they'll meet their future spouses for the very first time. Don't worry, though. Their significant others were specifically chosen for them by trained matchmakers. Phew.

youtube=https://www.youtube.com/watch?v=pEpl1-yDQOQ&w=640&h=360

Perception. 10pm on TNT. Rya Kihlstedt from Nashville guest stars as a woman who confessed to murder and may or may not be possessed.

OK! News: The Pretty Little Liars Reveal The Plot Points That Shocked Them The Most

Finding Carter. 10pm on MTV. MTV's new series follows a 16-year-old girl who gets returned to her rightful family after finding out that the woman that she thought was her mother was really her kidnapper. Uh oh.

youtube=https://www.youtube.com/watch?v=DS9Th9Drujg&w=640&h=360

OK! Exclusive: Why Finding Carter is "The Polar Opposite of The Brady Bunch"

Inside the Walking Dead. 10pm on AMC. This documentary goes behind the scenes of the show, also giving a glimpse at the show's intense costumes and makeup.

OK! News: Which Teen Mom Is Next to Write a Book?

What's on your TV agenda tonight? Tweet us @OKMagazine.